Instruct: Identify the main category of the given Medrxiv paper based on its title.
Query: Status Quo and Influencing Factors of Family Doctors Performance in Dongguan City
The role of classroom volume, occupancy, voice reduction and ffp2 masks in transmission risk of SARS-CoV2 in schools
Understanding the role of mask-wearing during COVID-19 on the island of Ireland
Prevalence of long-term effects in individuals diagnosed with COVID-19: a living systematic review
Safety and Immunogenicity of CoronaVac and ChAdOx1 Against the SARS-CoV-2 Circulating Variants of Concern (Alpha, Delta, Beta) in Thai Healthcare Workers
Preexisting and new-onset diabetes in patients with COVID-19 pneumonia
Testing for SARS-CoV-2 among cruise ship travelers repatriated to the United States, February to March 2020
Risk factors and impacts of child growth faltering in low- and middle-income countries
Radiomics-based patient inclusion model improves clinical trial performance
Estimation of excess all-cause mortality due to COVID-19 in Thailand
SARS-CoV-2 specific T cells and antibodies in COVID-19 protection: a prospective study
The General Psychopathology Factor from Early to Middle Childhood: Longitudinal Genetic and Risk Analyses
Systematic review of spontaneous reports of myocarditis and pericarditis in transplant recipients and immunocompromised patients following COVID-19 mRNA vaccination
Occupation and COVID-19 mortality in England: a national linked data study of 14.3 million adults
Reduced seroconversion in children compared to adults with mild COVID-19
Temporal Variations in Seroprevalence of SARS-CoV-2 Infections by Race and Ethnicity in Arkansas.
Antibody titers before and after booster doses of SARS-CoV-2 mRNA vaccines in healthy adults
Development of a saliva-optimized RT-LAMP assay for SARS-CoV-2
The Effect of Residents Working-Hour Restrictions on Patient Safety, Resident Well-Being, and Resident Education: Protocol for a Systematic Review and Meta-Analysis
Quantitative detection of SARS-CoV-2 Omicron BA.1 and BA.2 variants in wastewater through allele-specific RT-qPCR
A Machine Learning Perspective on Causes of Suicides and identification of Vulnerable Categories using Multiple Algorithms
Safety and Immunogenicity of SARS-CoV-2 S-2P Protein Vaccine MVC-COV1901 in People Living with HIV
Stability of diagnostic coding of psychiatric outpatient visits across the transition from the second to the third version of the Danish National Patient Registry
Anatomical phenotyping and staging of brain tumors
Vaccine Effectiveness Against Hospitalization Among Adolescent and Pediatric SARS-CoV-2 Cases in Ontario, Canada
How are combinations of physical activity, sedentary behaviour and sleep related to cognitive function in older adults? A systematic review.