Instruct: Identify the main category of the given Medrxiv paper based on its title.
Query: Efficacy of propolis as an adjunct treatment for hospitalized COVID-19 patients: a randomized, controlled clinical trial
Evaluation of sample collection and transport strategies to enhance yield, accessibility, and biosafety of COVID-19 RT-PCR testing
Economic evaluation of disease elimination: an extension to the net-benefit framework and application to human African trypanosomiasis
Medical Students' Perceptions of Learning and Working on the COVID-19 Frontlines: "...a confirmation that I am in the right place professionally."
Apt interpretation of comprehensive lipoprotein data in large-scale epidemiology - disclosure of fundamental structural and metabolic relationships
Is any job better than no job? A systematic review
Longitudinal changes of white matter hyperintensities in sporadic small vessel disease: a systematic review and meta-analysis
Immunogenomic intertumor heterogeneity across primary and metastatic sites in a patient with lung adenocarcinoma
Overlapping Time Scales Obscure Early Warning Signals for the Second COVID-19 Wave
Impairment of CSF Egress through the Cribriform Plate plays an Apical Role in Alzheimer's disease Etiology
Adverse effects of antipsychotic drugs on metabolism depend on drug dosing and feeding times
Methylome-wide association study of early life stressors and adult mental health reveals a relationship between birth date and cell type composition in blood
Impacts of Teaching Modality on U.S. COVID-19 Spread in Fall 2020 Semester
High-resolution epigenome analysis in nasal samples derived from children with respiratory viral infections reveals striking changes upon SARS-CoV-2 infection
Mental health assessment of Israeli adolescents before and during the COVID-19 pandemic
Red cell folate status among a subset of Canadian children with Down Syndrome post-fortification.
Fast raster-scan optoacoustic mesoscopy enables assessment of human melanoma microvasculature in vivo
In-person schooling and associated COVID-19 risk in the United States over Spring Semester 2021
Antibiotic use for typhoid in India: Estimation from private sector prescription data during 2013-15
Details of "conversion therapy" practices and concordance with legislative definition: Findings from a non-probability community-based survey in Canada, 2020
Artificial Intelligence System Reduces False-Positive Findings in the Interpretation of Breast Ultrasound Exams
Transcriptional patterns of coexpression across autism risk genes converge on established and novel signatures of neurodevelopment
Exploring the relationship between resting state intra-network connectivity and accelerometer-measured physical activity in pediatric concussion: A cohort study.
Generalized and specific whole-brain white matter abnormalities in human cocaine and heroin use disorders
Epigenome-wide Association Study of Alcohol Use Disorder in Five Brain Regions
COVID-19 Outcomes in Patients with Cancer: Findings from the University of California Health System Database