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AMA Research Challenge 2022

Improving Health Professionals&#39; and Learners&#39; Attitudes Towards Homeless Individuals Through Street-Based Outreach

The purpose of the AAAI conference series is to promote research in Artificial Intelligence (AI) and foster scientific exchange between researchers, practitioners, scientists, students, and engineers across the entirety of AI and its affiliated disciplines. AAAI-23 is the Thirty-Seventh AAAI Conference on Artificial Intelligence. The theme of this conference is to create collaborative bridges within and beyond AI. Like previous AAAI conferences, AAAI-23 will feature technical paper presentations, special tracks, invited speakers, workshops, tutorials, poster sessions, senior member presentations, competitions, and exhibit programs, and two new activities: a Bridge Program and a Lab Program. Many of these activities are tailored to the theme of bridges and all are selected according to the highest standards, with additional programs for students and young researchers. 
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AAAI 2023

The purpose of the AAAI conference series is to promote research in Artificial Intelligence (AI) and foster scientific exchange between researchers, practitioners, scientists, students, and engineers across the entirety of AI and its affiliated disciplines.

Improving Health Professionals' and Learners' Attitudes Towards Homeless Individuals Through Street-Based Outreach

poster

Welcome to the largest national, multi-specialty research event **featuring research from 750 medical students, residents and fellows, and international medical graduates.**


#### Event Details
The 2022 American Medical Association Research Challenge includes a poster symposium hall and a semifinals hall with the top scored research. Log in at any time throughout the event to:
* **View posters and presentations** on a variety of topics and specialties
* **Score posters in the semifinals** to help decide the top five finalists (AMA member exclusive opportunity)
* **Connect with participants** and provide feedback to help advance their research

At the conclusion of this event, the AMA will announce the top five finalists who will advance to the AMA Research Challenge finals, present their research to an elite panel of judges and compete to win a $10,000 grand prize sponsored by Laurel Road.
 

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**Oct. 20, 6 — 7 p.m. Central**
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 **Speakers**
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Ricardo Correa, MD, EdD
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Stuart M. Greenstein, MD
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Stephanie Strohbeen, MD
 
 **Oct. 22, 11 a.m. — Noon Central**
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Jessica Li, MD/PhD Candidate
![](https://assets.underline.io/uploads/markdown_image/1/image/9950ef2e0237f54cb3d8280334d42491.jpg)
Charles Lopresto, DO

### Sponsor
AMA would like to thank Laurel Road for sponsoring a $10,000 grand prize for the winner of the AMA Research Challenge. Laurel Road is not involved in the judging or scoring process to select the winner. The winner will be announced on Dec. 7 during the AMA Research Challenge finals. Payment of the grand prize will be directly from Laurel Road. See the AMA Research Challenge Official Rules for terms and conditions.

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**There is no registration fee for this event! **

Register to explore research in a variety of topics. AMA members get exclusive access to score posters in the semifinals.

**Please use the link below to register for free if you have not already done so:**

https://www.ama-assn.org/about/events/ama-research-challenge

Registration Is Required

Welcome to the largest national, multi-specialty research event featuring research from 750 medical students, residents and fellows, and international medical graduates.


Background
Opioid-Use Disorder is characterized by the problematic use of opioids leading to significant impairment and distress. The disorder affects approximately 2.1 million people within the United States alone, and 16 million people worldwide as of 2016. Fortunately, there are several methods poised to aid in the prevention of OUD. One method is preemptive multimodal analgesia to reduce subjective post-operative pain outcomes as well as oral morphine equivalents. Another method utilizes a cheap, cost-effective at-home opioid disposal kit as a method to discard left-over opioid prescriptions after recovery.
Methods
The preemptive MMA study consisted of a retrospective chart analysis, which found 1416 eligible patients who underwent THA or TKA. The patients received acetaminophen, celecoxib, and gabapentin between 30-60 minutes pre-operatively. Post-operatively, oral morphine equivalents were monitored along with subjective pain scores. In reference to the at-home disposal kit study, a RCT compared patients receiving the usual standard of care, to the group obtaining an at-home opioid disposal kit post-op. A text messaging service was implemented to obtain self-reported data and disposal rates.
Results
The preemptive MMA led to a significant decrease in oral morphine equivalents at day zero and day two post-op, as well as a significant reduction in subjective pain scores at almost every time-period regardless of the operation.
In the at-home disposal kit study, 42.7% of patients in the control group self-reported disposal of their remaining opioids, while 60.0% of patients who received a kit disposed of their left-over medication. 
Conclusion
Preemptive MMA significantly reduced the patient’s subjective pain levels post-operatively at almost every time-period tested. It is important to emphasize that in this study the medications administered were non-opioids, as perioperative opioid prescriptions lead to an increased risk of developing OUD. Additionally, in a randomized clinical trial, mild opioids (Codeine/Acetaminophen) were found to be non-inferior to strong opioids in respect to pain after fractures requiring surgical intervention; therefore, a mild treatment plan is preferred and preventive in the development of OUD. Furthermore, at-home disposal kits could be used in conjunction with preemptive MMA to reduce the rate of OUD in the greater population by motivating patients with a proper disposal method.


Pre- and Post-Operative Practices to Reduce the Rate of Opioid-Use Disorder

Background: In the US, the majority of Class I medical device recalls—FDA’s most serious designation, indicating high probability of adverse health consequences or death—are attributed to devices cleared under the 510(k) pathway. The role of predicates, which are previously authorized devices used to clear new devices under 510(k), in Class I recalls has not been systematically studied. We sought to determine whether 510(k) devices subject to Class I recalls used predicates that had a previous history of recalls, and to assess whether recalled devices were used as predicates in future device authorizations.

Methods: In this cross-sectional study, all 510(k) devices subject to Class I recalls between January 2020 through December 2021 (“index devices”) were identified from the FDA’s annual recall listing. Information about predicate devices was extracted from index device decision memos in the Devices@FDA database. Devices authorized using index devices as predicates (“descendants”) were identified using a commercially available database. Devices were characterized by their regulatory history (medical specialty, product code, special designations, use of clinical evidence) and recall history (date of recall relative to index device recall or clearance, FDA classification of recall severity).

Results: Between 2020-21, 75 devices were subject to Class I recalls, with each recall affecting nearly ten thousand devices. Of these devices, 31 (41.3%) had prior recalls, including 13 (41.9%) with Class I recalls. These 75 devices had 109 unique predicates, of which 62 (56.9%) had prior recalls, including 43 (69.4%) with at least one Class I recall. Recalls for 36 predicates (30.3%) preceded the predicate’s use to support clearance of the index device, and recalls for 51 predicates (42.9%) preceded the index device’s Class I recall. Fifty-two (69.3%) index devices were predicates for subsequent device authorizations. Of the 94 unique descendants identified, 49 (52.1%) had recalls, including 39 (79.6%) with at least one Class I recall.

Conclusion: Many 510(k) devices subject to Class I recalls were authorized using predicates with a known history of safety concerns and were used to clear additional devices that were later recalled. Stronger safeguards for the 510(k) pathway are needed to prevent such problematic predicate selection.

Predicate Lineages and Medical Device Recalls in the 510(k) Pathway

Abstract Title: Targeting reduced mitochondrial apoptotic signaling in relapsed acute myeloid leukemia

Background
The therapeutic landscape for acute myeloid leukemia (AML) has expanded impressively over the last few years, with 8 new drug approvals by the Food and Drug Administration. However, 40-60% of AML patients still relapse, and the majority of these patients succumb to their disease within 5 years due to limited therapeutic options. Since development of acquired drug resistance contributes significantly to treatment failure in AML, we aimed to investigate emerging mechanisms of resistance against targeted therapies and to identify potential strategies overcoming resistance.

Methods
We utilized dynamic BH3 profiling (DBP), a functional assay that measures drug-induced mitochondrial apoptotic signaling to derive pharmacologic landscapes for 17 AML patient-derived xenograft (PDX) mouse models, together with genomic and transcriptomic profiles. First, we performed ex vivo DBP on treatment naïve and relapsed PDX myeloblasts to predict drugs active in vivo. Next, we modeled in vivo acquired resistance to single agents (venetoclax, quizartinib, birinapant, LCL-161, JQ-1, and S63845) with different mechanisms of action to elucidate a mechanism of pan-resistance. Lastly, we reproduced drug-response patterns identified in PDX models in primary (n=81) and relapsed (n=53) AML patients, underscoring the clinical application of our methods.

Results
By applying ex vivo DBP assays on PDX myeloblasts, we showed that ex vivo mitochondrial drug sensitivity at 14 hours correlated with in vivo activity at day 14 post-treatment, thereby validating DBP as a functional predictive biomarker for personalizing AML therapy. We discovered that PDXs with acquired drug resistance to 6 agents targeting distinct pathways emerged via the common mechanism of reduced mitochondrial apoptotic signaling and developed broad chemoresistance. RNA sequencing revealed gene expression signatures corresponding to common relapse phenotypes conserved across distinct targeted agents. Importantly, we observed that AML patients at relapse showed similar pan-resistance phenotypes as PDX models with acquired resistance.

Conclusion
We showed that DBP-based assays can direct personalized therapy for mouse and human AML in diagnosis and relapsed settings, which is notable given that pan-resistance phenotypes limit treatment options for relapsed tumors. Driven by these compelling pre-clinical findings, we are initiating a phase 2 DBP-guided clinical trial to selectively and personally choose therapies for patients with relapsed or refractory AML.

A New Achille’s Heel: Targeting Reduced Mitochondrial Apoptotic Signaling in Relapsed Acute Myeloid Leukemia

INTRODUCTION: 
Femoral shaft fractures are significant injuries with a predominately traumatic etiology. Intramedullary nailing is the preferred surgical intervention, and reduction of the fracture can be accomplished through closed or open methods. Closed reduction is often considered the gold standard as it is theorized that an intact fracture hematoma has osteogenic properties that will result in superior healing with fewer complications. Open reduction procedures persist in cases of polytraumatic injury, when the fracture proves difficult to reduce by closed methods, or in geographical areas with limited resources. Studies comparing outcomes between the treatments have conflicting results. The purpose of this systematic review and meta-analysis was to compare the outcomes and complications of intramedullary nailing of femoral shaft fractures between open and closed reduction. 
METHODS: 
Following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines, PubMed (MEDLINE), Embase, Scopus, and CENTRAL were searched to identify comparative studies up to May 2022. Additional studies were identified through hand and citation searching. Exclusion criteria included pediatric patients younger than 17 years of age, studies not published in English, and studies that reported fractures of the proximal or distal femur. The primary outcome was the rate of union. Secondary outcomes included time to union, operative time, and complication rate. 
RESULTS:
Closed reduction had a higher pooled union rate (93.93%, 92.02%), an increased odds ratio for union (OR =1.624 [95% CI: 1.004, 2.624]; p =.048), and a faster time to union (SMD = -0.292 [95% CI: -0.549, -.0.035]; p =.026). There were no differences in operative time (SMD = .128 [95% CI: -0.700, .956] p = .762) or overall complication rate (OR = 1.314 [95% CI: .966, 1.787] p = .082).
DISCUSSION AND CONCLUSION: 
Closed reduction has the advantage of higher union rates, quicker time to union, and lower overall infection compared to open reduction for intramedullary nailing of femoral shaft fractures. Open reduction remains a reasonable alternative with acceptable union rates when closed reduction is not feasible.


A Systematic Review and Meta-analysis of Open Versus Closed Reduction and Intramedullary Nailing of Femoral Shaft Fractures

BACKGROUND: About 30-40% of PDAs can be missed on CTs due to subtle imaging findings. Unfortunately, PDA can advance from being undetectable to widely metastatic in a matter of months which underscores the critical need to develop novel tools such as AI to improve its detection. Most current AI-based PDA detection approaches require manual segmentations that are not clinically scalable. Our objective was to develop a 3D Convolutional Neural Network (CNN) for fully automated detection of PDA on standard-of-care CTs.

METHODS: A fully-automated 3D-CNN was trained on a dataset of 696 portal venous phase diagnostic CTs with PDA and 1080 control CTs with normal pancreas. Model was evaluated on (a) test subset of 409 PDA and 829 control CTs; (b) simulated cohort with high pre-test probability of PDA (1-5% over 3-years), which matched the case-control distribution in high-risk groups (glycemically-defined new-onset diabetes and high ENDPAC score); (c) multi-institutional public dataset of 194 PDA and 80 control CTs; and (d) a cohort of 102 prediagnostic CTs (i.e. CTs with normal-appearing pancreas incidentally acquired 3–36 months before clinical diagnosis of PDA) and 134 control CTs.

RESULTS: In the test subset, the model correctly classified 360 (88%) PDA CTs and 783 (94%) normal CTs [accuracy (mean; 95% CI) 0·92 (0·91-0·94); AUROC 0·97 (0·96-0·98), sensitivity 0·88 (0·85-0·91), specificity 0·95 (0·93-0·96)]. Performance was comparable across tumor stages (sensitivity 0·80, 0·87, 0·95 and 1 on T1 through T4 stages, respectively), hypodense versus isodense tumors (sensitivity: 0·90 vs. 0·82), age, sex, CT slice thicknesses & vendors (all p >0·05), and generalizable on both the simulated cohort [accuracy 0·95 (0·94-0·95), AUROC 0·97 (0·94-0·99)] and public dataset [accuracy 0·86 (0·82-0·90), AUROC 0·90 (0·86-0·95), sensitivity 0·88, specificity 0·93] including for T1 and isodense tumors (sensitivity 0·76 and 0·88, respectively). Despite being trained on diagnostic CTs, the model could detect PDA at the prediagnostic stage from normal pancreas [accuracy 0·84 (0·79-0·88), AUROC 0·90 (0·87-0·94), sensitivity 0·75 (0·66-0·83), specificity 0·90 (0·85-0·95)] at a median interval of 475 days (range:93-1082 days) between prediagnostic CTs and the clinical diagnosis of PDA. 

CONCLUSION: A 3D-CNN developed on a large dataset shows high accuracy and generalizability for fully-automated detection of PDA (including small and isodense tumors) on diagnostic CTs as well as for early detection of PDA from normal pancreas on prediagnostic CTs at a substantial lead time prior to clinical diagnosis. Prospective validation with blood-based biomarkers could enable AI-augmented early detection of PDA in high-risk subjects.

AI-Powered Fully automated Early Detection of Pancreatic Ductal Adenocarcinoma on Standard-of-care CT Scans.

Background: The rising prevalence of obesity, diabetes, and smoking among American adults has disproportionately affected female, Black, and younger patients. The purpose of this study was to evaluate for disparity in patient eligibility for Total Ankle Arthroplasty (TAA) based on race, ethnicity, gender, and age by applying Body Mass Index (BMI), smoking, and diabetes criteria to the American College of Surgeons National Surgical Quality Improvement Program (ACS-NSQIP) database.

Methods: Patients in the ACS-NSQIP database who underwent TAA from 2011- 2020 were retrospectively reviewed. BMI cut-offs of <50kg/m², <45kg/m², <40kg/m², <35kg/m², diabetes, and smoking criteria were then applied. The eligibility rate for TAA was examined for each BMI cut-off, diabetes, and smoking; findings were stratified by race, ethnicity, gender, and age. Independent T-tests, Chi-squared tests, and Fisher’s exact tests were performed to compare differences at an α = 0.05.

Results: 1215/1865 TAA patients (65.1%) were included after applying the exclusion criteria. Black patients had disproportionately lower rates of eligibility at the most stringent BMI cut-off of <35kg/m² (p=0.004). In contrast, Asian American/Pacific Islander patients had higher rates of eligibility at the BMI cut-offs of <35kg/m² (p=0.033) and <40kg/m² (p=0.039). Black patients also had lower eligibility rates after diabetes (p=0.042) and smoking (p=0.008) criteria were applied. Whereas, white non-Hispanic patients had disproportionately higher rates of eligibility after the diabetes criterion was applied (p=0.04). Females had lower eligibility rates across all BMI cut-offs (p<0.05 for all). Younger patients had lower eligibility rates across all BMI cut-offs (p<0.05 for all) and smoking (57 ± 10, p<0.001).

Conclusion: Stringent BMI cut-offs, diabetes, and smoking criteria may disproportionately disqualify women, Black, and younger patients from receiving Total Ankle Arthroplasty. This data suggests that current eligibility criteria may exacerbate disparity in access to arthroplasty care for already vulnerable populations.

Are Body Mass Index (BMI), diabetes, and smoking cutoffs creating racial, ethnic, gender, or age disparities in patient eligibility for Total Ankle Arthroplasty?

Background
Manual ventilation with a self-inflating bag is a difficult clinical skill to perform safely and effectively. Hyperventilation is a common and harmful adverse effect, potentially causing deleterious hemodynamic changes, gastric insufflation, and/or direct volutrauma to the lungs. To improve manual ventilation safety and efficacy, we developed the Bag valve mask Emergency Narration Guided Instrument (BENGI), a handheld tidal volume feedback device that provides simple and intuitive audio-visual feedback in real-time on the correctness of the user’s ventilations. To test whether the BENGI improves manual ventilation, a randomized crossover manikin simulation study was performed.

Methods
Participants (n = 20) were recruited from LSUHS-Shreveport medical school to manually ventilate both with and without the BENGI. Participants were asked to manually ventilate a manikin for 5 min under four different scenarios at different target tidal volumes (500, 750, 300, and 20 mL) and respiratory rates (10 min−1 for Scenarios 1 through 3 and 60 min−1 for Scenario 4). Air pressure and flow waveforms were measured to calculate tidal volume, respiratory rate, inspiratory time, peak inspiratory pressure, and the work and power imparted to the test lungs by the manual ventilation. Intra-participant (standard deviations throughout a given test) and inter-participant variations (standard deviation among all participants for a given scenario) in respiratory parameters were assessed, and Poincaré plots were constructed to further reveal alterations in short-term (SD1) and long-term (SD2) variations in tidal volume and respiratory rate delivery.

Results
BENGI use during manual ventilation significantly reduced deviations in tidal volume and respiratory rates from the target values. Both intra- and inter-participant variations in tidal volumes and respiratory rates were reduced. Poincaré plot analysis suggested that long-term (SD2) variations in tidal volume and respiratory rate were decreased in all scenarios, and short-term (SD1), or cycle-to-cycle, variations in tidal volume (Scenario 4) and respiratory rate (Scenarios 1 through 3) were also diminished.

Conclusion
Use of the BENGI improved both tidal volume and respiratory rate accuracy and consistency during manual ventilation in a manikin simulation study. The BENGI may have utility as a medical device for improving manual ventilation and reducing manual hyperventilation.

Audiovisual Feedback from a Handheld Monitoring Device Improves Manual Ventilation

Abstract Title 
Skin Conductance Measures as Possible Predictors of Response to Propranolol for Anxiety in Autism Spectrum Disorder

Bethany Thompson-Gordon,a Carrina Appling,b Matthew Prendergast, b Nanan Nuraini,b David Beversdorf,c Valerie Davila,d & Bradley Ferguson e*

Background
Autism Spectrum Disorder (ASD) is a neurodevelopmental condition affecting the way individuals communicate and interact with others. Central features of ASD include impaired social communication and restricted interests and repetitive behaviors. Several clinical studies have observed enhanced sympathetic tone in ASD patients with anxiety frequently co-occurring. Because sweating is solely controlled by sympathetic activity, as sweat gland activity rises, sympathetic activity can be quantified by increases in electrical skin conductance levels (SCL). These elevated SCL are also associated with higher levels of anxiety. To date, there is no diagnostic biomarker nor any proven pharmacological means of treating the hallmark features of ASD nor any clear efficacy of pharmaceutical agents for mood disturbances in ASD. Propranolol, a beta-adrenergic antagonist, blocks the physiologic effects of sympathetic tone and is widely used for its anxiolytic effects in those without ASD, however more research is needed to better understand its use for anxiety in ASD. Our team previously found improved communication behaviors and cognitive flexibility after a single dose of propranolol in ASD patients. We have also examined propranolol use for anxiety in ASD with a 12-week open-label study in autistic participants which found anxiety levels to be significantly improved with treatment. Based on these outcomes, we became interested in determining whether SCL may predict which patients will be most responsive to the anxiety-reducing effects of propranolol. 

Methods
19 ASD patients ages 7-24 participated in this study. Anxiety was one of several behavioral sub-domains observed and evaluated using the Clinical Global Impression of Severity (CGIS) scale. SCL and other indicators of sympathetic activity were measured at baseline and week 12 of an open-label propranolol trial. 

Results
No association was observed between SCL and reduction in anxiety with propranolol thus the null was retained. However, repetitive behavior, another sub-domain examined, does share a positive linear relationship with SCL on a regression analysis. 

Conclusion
Further research is warranted to identify which patients might benefit most from propranolol therapy. While SCL may predict propranolol response for repetitive behaviors, other biomarkers of beta-adrenergic activity need analysis to impact future clinical decision making when treating anxiety and other aberrant behaviors in ASD. 
_________
aUniversity of Missouri School of Medicine; bUniversity of Missouri Interdisciplinary Neuroscience Program, Columbia, MO, USA; University of Missouri Thompson Center for Autism & Neurodevelopmental Disorders, Columbia, MO, USA; cUniversity of Missouri Departments of Radiology, Neurology, & Psychological Sciences; William & Nancy Thompson Endowed Chair in Radiology; Thompson Center for Autism & Neurodevelopmental Disorders, dBaylor University Department of Psychology and Neuroscience, eUniversity of Missouri Departments of Health Psychology & Radiology; Thompson Center for Autism & Neurodevelopmental Disorders.

*Corresponding author

This work was supported by the Office of the Assistant Secretary of Defense for Health Affairs through the Autism Research Program under Award No. W81XWH-16-1-0321. Opinions, interpretations, conclusions and recommendations are those of the author and are not necessarily endorsed by the Department of Defense.


Baseline Skin Conductance Level as a Predictor of Response to Propranolol for Anxiety and Other Clinical Outcomes in Autism Spectrum Disorder

Boosting Babies’ Immunity through Toll-like Receptor-2: A transcriptomic-based analysis

Abstract Title: Comparative Efficacy of Mohs Micrographic Surgery and Traditional Surgical Treatment Modalities in Periocular Skin Cancers: A Systematic Review and Meta-analysis

Background: Periocular skin cancers are especially challenging to treat due to the proximity of the lesions to essential and sensitive anatomical structures. Surgical options for periocular skin cancers include standard surgical excision (GSE), Mohs micrographic surgery (MMS), wide local excision (WLE) and frozen section evaluation (FSE). Currently, a randomized study comparing the efficacy of MMS and other traditional surgical treatment modalities in the treatment of various of periocular skin cancers does not exist. 

Methods: A meta-analysis was done using a random-effects model to account for clinical heterogeneity. A meta-analysis of proportions was also conducted for recurrence rates and was evaluated through meta-regression for subgroup analysis to compare results among periocular skin cancer subtypes. 

Results: Meta-regression analysis of proportions showed that the recurrence rate of basal cell carcinoma for MMS was significantly lower compared to the WLE technique (p<0.003); the recurrence rate of BCC for FSE was also significantly lower compared to the WLE technique (p<0.001). Meta-regression also demonstrated that the recurrence rates of sebaceous carcinoma for MMS was also significantly lower than compared to WLE (p<0.001). Meta-regression on squamous cell carcinoma also demonstrated significantly lower recurrence rates in MMS than that of FSE (p<0.001) and GSE (p=0.001).

Conclusion: We conclude that patients who had MMS had lower recurrence rates of sebaceous carcinoma or non-melanomas compared to patients who underwent the WLE technique. Proportionally among all studies, MMS was also demonstrated to have significantly lower recurrence rates in basal cell carcinoma and sebaceous carcinoma compared to WLE. Recurrence rates are also lower post-MMS compared to FSE and GSE in squamous cell carcinoma. Overall, these results illuminate that MMS is an excellent surgical technique for periocular skin cancers. While other surgical modalities such as WLE, FSE, GSE, and nonsurgical CYT can be equally comparable for some periocular skin cancer subtypes, further larger scale studies are needed to determine robust efficacy and guidelines for optimal surgical modality and treatment to improve patient outcomes.

Comparative Efficacy of Mohs Micrographic Surgery and Traditional Surgical Treatment Modalities in Periocular Skin Cancers: A Systematic Review and Meta-analysis

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