Instruct: Identify the main category of the given medRxiv paper based on the title.
Query: Artificial Intelligence Model for Detecting Duodenal Endoscopic Changes on Images of Functional Dyspepsia
Ornithine Decarboxylase (ODC1) gene variant (rs2302615) is associated with gastric cancer independently of  Helicobacter pylori  CagA serostatus
Geographically-targeted COVID-19 vaccination is more equitable and averts more deaths than age-based thresholds alone
Field Testing of a Decision Support Tool for Acute Appendicitis using an Online Randomized Experimental Design
A differential regulatory T cell signature distinguishes the immune landscape of COVID-19 hospitalized patients from those hospitalized with other respiratory viral infections
Life stage-specific effects of genetic susceptibility to higher body size on body fat and lean mass: prospective cohort study
Moderate-Intensity Exercise Versus High-Intensity Interval Training to Recover Walking Post-Stroke: Protocol for a Randomized Controlled Trial
Current prices versus minimum costs of production for CFTR modulators
Vaccination in a two-group epidemic model
Operationalising the Centiloid Scale for florbetapir PET Studies on PET/MR
Arrhythmia variant associations and reclassifications in the eMERGE-III sequencing study
The potential impact of delta variant of SARS-CoV-2 in the context of limited vaccination coverage and increasing social mixing in Bogota, Colombia
Adherence trajectory as an on-treatment risk indicator among drug- resistant TB patients in the Philippines
On-scalp magnetoencephalography for childhood epilepsies
Validation of diagnostic nomograms based on CE-MS urinary biomarkers to distinguish clinically significant prostate cancer
Analysis of SARS-CoV-2 variants from 24,181 patients exemplifies the role of globalisation and zoonosis in pandemics
Household transmission of SARS-CoV-2; a prospective longitudinal study showing higher viral load and transmissibility of the Alpha variant compared to previous strains
Interleukin-6 Receptor Antagonists in Critically Ill Patients with Covid-19 - Preliminary report
Clinical evaluation of a RT-LAMP SARS-CoV-2 test for the Point-Of-Care, rapid, low-cost, integrating sample solid phase extraction and on which reagents are lyophilized.
ACE2 gene expression and inflammatory conditions in periodontal microenvironment of COVID-19 patients with and without diabetes evaluated by qPCR
Cell-free DNA ultra-low-pass whole genome sequencing to distinguish malignant peripheral nerve sheath tumor (MPNST) from its benign precursor lesion: a cross-sectional study
The efficacy, effectiveness and safety of SARS-CoV-2 disinfection methods (including ozone machines) in educational settings for children and young people
Direct influence of BMPR2-mutations on cytokine patterns and biomarker effectiveness in pulmonary arterial hypertension.
Trends in Racial and Ethnic Disparities in Multimorbidity Prevalence in the United States: A Serial Cross-Sectional National Health Interview Survey Analysis from 1999 to 2018
Cost-effectiveness of the digital therapeutics for essential hypertension
Silica-encapsulated DNA tracers for measuring aerosol distribution dynamics in real-world settings