Instruct: Identify the main category of a medRxiv paper based on its title.
Query: Do school closures and school reopenings affect community transmission of COVID-19? A systematic review of observational studies
Oxygen provision to severely ill COVID-19 patients at the peak of the 2020 pandemic in a Swedish district hospital
An 8 week randomized Dietary Guidelines for Americans -based diet intervention improves the omega-3 index of healthy women
Safety, Immunologic Effects and Clinical Response in a Phase I Trial of Umbilical Cord Mesenchymal Stromal Cells in Patients with Treatment Refractory Systemic Lupus Erythematosus
Comparison of Carotid Intima Media Thickness between Women with History of Preeclampsia and Normal Pregnancy: A Meta-Analysis of Systematic Review
Psychological factors underpinning vaccine willingness in Israel, Japan and Hungary
The UK Coronavirus Job Retention Scheme and changes in diet, physical activity and sleep during the COVID-19 pandemic: Evidence from eight longitudinal studies
Testing Denmark: A Danish nationwide surveillance study of COVID-19
The impact of customized head molds on motion and motion-related artifacts from structural and functional MRI scans in children
"It affects every aspect of your life": A qualitative study of the impact of delaying surgery during COVID-19
Novel risk factors for Coronavirus disease-associated mucormycosis (CAM): a case control study during the outbreak in India
T cell response to intact SARS-CoV-2 includes coronavirus cross-reactive and variant-specific components
Molecular epidemiology of SARS-CoV-2 in Greece reveals low rates of onward virus transmission after lifting of travel restrictions based on risk assessment during summer 2020
Molecular epidemiology of paediatric bloodstream infections caused by Gram-negative bacteria in Oxfordshire, UK
The role of educational settings in the transmission chain of SARS-CoV-2 in 2020: a systematic review
COVID-19 Mitigation Practices and COVID-19 Rates in Schools: Report on Data from Florida, New York and Massachusetts
Telemedicine For Prenatal Care: A Systematic Review
Spectral imaging enables contrast agent-free real-time ischemia monitoring in laparoscopic surgery
Vascular risk is not associated with Alzheimer's disease neuropathology among cognitively normal older adults
Single nucleus RNA-sequencing reveals altered intercellular communication and dendritic cell activation in nonobstructive hypertrophic cardiomyopathy
SARS-CoV-2 B.1.1.7 lineage rapidly spreads and overwhelms R.1 lineage in Japan: serial and stationary observation in a community
An atlas of associations between polygenic risk scores from across the human phenome and circulating metabolic biomarkers
Cellular and humoral responses to SARS-CoV-2 vaccination in immunosuppressed patients
Responsiveness to risk explains large variation in COVID-19 mortality across countries
Immunological pathways underlying autism: Findings from Mendelian randomization and genetic colocalisation analyses.
Genomic surveillance of SARS-CoV-2 in a university community: insights into tracking variants, transmission, and spread of Gamma (P.1) variant