Instruct: Identify the main category of the given Medrxiv paper based on its title.
Query: Efficacy of chloroquine and hydroxychloroquine in treating COVID-19 infection: a meta-review of systematic reviews and an updated meta-analysis
Cancer and the risk of COVID-19 diagnosis, hospitalisation, and death: a population-based multi-state cohort study including 4,618,377 adults in Catalonia, Spain
Lesions in putative language and attention regions are linked to more severe strokes in patients with higher white matter hyperintensity burden
Performance Drift in a Clinical Prognostic Algorithm during the SARS-CoV-2 Pandemic
The Impact of Face Masks on Performance and Physiological Outcomes during Exercise: A Systematic Review and Meta-analysis
COVID-19 testing and vaccine willingness: Cross-sectional survey in a culturally diverse community in Sydney, Australia
A Systematic Review of COVID - 19 Induced Myocarditis - Symptomatology, Prognosis, and Clinical Findings
Effect of Eight-Week Online Cognitive Training in Parkinson's Disease: A Randomized Controlled Trial
Acceptability of human papillomavirus (HPV) self-sampling among never- and under-screened Indigenous and other minority women: a randomised three-arm community trial in Aotearoa New Zealand
Data Preparation of the nuMoM2b Dataset
Indoor dust as a matrix for surveillance of COVID-19 outbreaks
Pay-it-forward to improve influenza vaccine uptake and public engagement among children and older adults in China: A quasi-experimental pragmatic trial
Prevalence of Specific Multimorbidity Combinations and Association with Medical Expenditures and Perceived Health among U.S. Adults, 2016-2019
Irremediable psychiatric suffering in the context of medical assistance in dying: a qualitative study
Ranitidine use, N-Nitrosodimethylamine (NDMA) production and variations in cancer diagnoses
Case fatality rates for COVID-19 are higher than case fatality rates for motor vehicle accidents for individuals over 40 years of age
Impact of low relative skeletal muscle mass and power on the development of metabolic syndrome in Japanese women: a 7-year prospective study
Accelerated Partner Therapy contact tracing intervention for people with chlamydia: the LUSTRUM process evaluation using programme theory
First identification of SARS-CoV-2 Lambda (C.37) variant in Southern Brazil
Hydroxychloroquine/Chloroquine in COVID-19 With Focus on Hospitalized Patients - A Systematic Review
Poking COVID-19: insights on genomic constraints among immune-related genes between Qatari and Italian populations
Risk factors and preventive interventions for post Covid-19 condition: systematic reviews
Development and validation of a clinical and genetic model for predicting risk of severe COVID-19
Exploring Risks of Human Challenge Trials for COVID-19
Cognitive functioning in anxiety and depression: Results from the ALSPAC cohort
PLWHA's Perspective on Community Stigma for Getting Social Support and Improving Life Quality in the Digital Era