Instruct: Identify the main category of Medrxiv papers based on the titles.
Query: COVID-19 onset reduced the sex ratio at birth in South Africa
Changes in health behaviors, mental and physical health among older adults under severe lockdown restrictions during the COVID-19 pandemic in Spain
COVID-19 gender difference pattern in Iranian population, compared to the global pattern; a systematic review and meta-analysis
Ancestry May Confound Genetic Machine Learning: Candidate-Gene Prediction of Opioid Use Disorder as an Example
Renewable Energy Use in Australian Public Hospitals
Evaluating discharges and readmissions using a COVID Virtual Ward model: a retrospective data study assessing patient outcomes and the likely staffing commitment
The association between WASH, nutrition, and early childhood growth faltering in rural Cambodia: a cross-sectional risk factor analysis
Real-time Alerting System for COVID-19 Using Wearable Data
Predictors of real-world parents acceptance to vaccinate their children against the COVID-19
Clinical and Virologic Factors associated with Outcomes of COVID-19 before and after Vaccination among Veterans: Retrospective Analysis from Six New England States
Model selection reveals the butyrate-producing gut bacterium Coprococcus eutactus as predictor for language development in three-year-old rural Ugandan children
The antibody response to SARS-CoV-2 increases over 5 months in patients with anosmia/dysgeusia
SARS-CoV-2 is associated with changes in brain structure in UK Biobank
Gender Distribution of Organizing Committees and Invited Speakers at the International Conferences on Emergency Medicine
Half the truth is often a great lie: testing for tick-borne diseases and implications for surveillance
In vitro potency of combinatorial antifungal drugs towards Candida isolates from patients.
Association Between a 22-feature Genomic Classifier and Biopsy Gleason Upgrade During Active Surveillance for Prostate Cancer
Is the vitamin D status of patients with COVID-19 associated with reduced mortality?
Epidemiology and genetic diversity of SARS-CoV-2 lineages circulating in Africa
Analysis of humoral immunity against emerging SARS-CoV-2 variants: a population-based prevalence study in Yokohama, Japan
COVID-19 Vaccine Concerns about Safety, Effectiveness and Policies in the United States, Canada, Sweden, and Italy among Unvaccinated Individuals
Preliminary Rasch analysis of the Multidimensional Assessment of Interoceptive Awareness in adults with stroke
Child and caregiver mental health during 12 months of the COVID-19 pandemic in Australia: findings from national repeated cross-sectional surveys
Population Pharmacokinetics of Oxcarbazepine: A Systematic Review
Applying the FAIR principles to data in a hospital: challenges and opportunities in a pandemic
Japanese Project for Telepsychiatry Evaluation during COVID-19: Treatment Comparison Trial (J-PROTECT): Rationale, design, and methodology