Instruct: Identify the main category of a medRxiv paper based on its title.
Query: COVID-19 seropositivity changes in asymptomatic individuals during the second and third waves of COVID-19 in Tokyo.
Sex differences in the mortality rate for coronavirus disease 2019 compared to other causes of death
Xylazine Spreads Across the US: A Growing Component of the Increasingly Synthetic and Polysubstance Overdose Crisis
Global Biobank Meta-analysis Initiative: powering genetic discovery across human diseases
Genetic influences on the intrinsic and extrinsic functional organizations of the cerebral cortex
Variation in colorectal cancer treatment and outcomes in Scotland: real world evidence from national linked administrative data
Incident heart failure and myocardial infarction in sodium-glucose cotransporter 2 versus dipeptidyl peptidase-4 inhibitor users
Non-Invasive Prenatal Testing (NIPT) Results for Participants of the eXtraordinarY Babies Study: Screening, Counseling, Diagnosis, and Discordance
Developing and comparing machine learning models to detect sleep apnoea using single-lead electrocardiogram (ECG) monitoring
Decision support system to evaluate VENTilation in the Acute Respiratory Distress Syndrome (DeVENT study): Trial Protocol
Detecting COVID-19 Related Pneumonia on CT Scans using Hyperdimensional Computing
One-year results of long femoropopliteal lesions stenting with fasciotomy lamina vastoadductoria
Estimating the risk of incident SARS-CoV-2 infection among healthcare workers in quarantine hospitals: the Egyptian example
COVID-19-Associated Hospitalizations Among Children Less Than 12 Years of Age in the United States
Barriers and facilitators to cross-sector workforce competency assessment in the care of older people residing in care homes
Inequalities in life expectancy in Australia according to education level: A whole-of-population record linkage study
Vaccination willingness for COVID-19 among health care workers in Switzerland
Comparison of the reactogenicity and immunogenicity of a reduced and standard booster dose of the mRNA COVID-19 vaccine in healthy adults after two doses of inactivated vaccine.
Unified Predictive Model for Endometriosis: Merging Clinical, Self-reporting and Genetic Information
Pandemic inequity in a megacity: a multilevel analysis of individual, community, and health care vulnerability risks for COVID-19 mortality in Jakarta, Indonesia
Assessing the Impact of Mask Usage on COVID-19 Transmission Using a Computer Simulation
Protocol for 18F-PSMA PET imaging in staging and management of prostate cancer - a retrospective cohort study
Epicardial adipose tissue thickness is associated with increased COVID-19 severity and mortality
Regulatory-approved deep learning/machine learning-based medical devices in Japan as of 2020: A systematic review
Efficacy of B12 fortified nutrient bar and yogurt in improving plasma B12 concentrations Results from two double blind randomised placebo controlled trials
Social, demographic and behavioural determinants of SARS-CoV-2 infection: A case-control study carried out during mass community testing of asymptomatic individuals in South Wales, December 2020