Instruct: Identify the main category of the given Medrxiv paper based on its title.
Query: Determinants of pre-vaccination antibody responses to SARS-CoV-2: a population-based longitudinal study (COVIDENCE UK)
Factors associated with fatal stroke in glioma patients: a population analysis
The New Therapeutics in Alzheimer's Disease Longitudinal Cohort study (NTAD): study protocol
Retrospective mortality and prevalence of SARS-CoV-2 antibodies in greater Omdurman, Sudan: a population-based cross-sectional survey
Effects of surgical masks on droplet and aerosol dispersion under various oxygen delivery modalities
Effects of supervised high-intensity hardstyle kettlebell training on grip strength and health-related physical fitness in insufficiently active older adults: The BELL pragmatic controlled trial
SARS-CoV-2 infections in nasal epithelial cells from smokers versus non-smokers
High infection attack rates of SARS-CoV-2 in Dutch households revealed by dense sampling
High- Versus Low-Dose Dexamethasone for the Treatment of COVID-19-related Acute Respiratory Distress Syndrome: A Multicenter and Randomized Open-label Clinical Trial
Alterations in Brain Morphology by MRI in Adults with Neurofibromatosis 1
A phase I study of oral vitamin D3 supplementation in boys with X-linked adrenoleukodystrophy
Measuring Oxygen Access: lessons from health facility assessments in Nigeria
Respiratory Syncytial Virus (RSV) RNA in wastewater settled solids reflects RSV clinical positivity rates
Interventions in sexual and reproductive health services addressing violence against women in low- and middle- income countries: a mixed-methods systematic review
Quantitative, multiplexed, targeted proteomics for ascertaining variant specific SARS-CoV-2 antibody response
Threat imminence reveals links among unfolding of anticipatory physiological response, cortical-subcortical intrinsic functional connectivity, and anxiety
Impact of long-term care facility size on preparedness and adherence to infection prevention and control guidance for the mitigation of COVID-19
Oxygen provision to severely ill COVID-19 patients at the peak of the 2020 pandemic in a Swedish district hospital: medical records-based cohort study
Problems with Evidence Assessment in COVID-19 Health Policy Impact Evaluation (PEACHPIE): A systematic strength of methods review
Considerations for Developing and Implementing an Online Community-Based Exercise Intervention for Adults Living with HIV: a qualitative study
Novel insights into the common heritable liability to addiction: a multivariate genome-wide association study
Genome Alert!: a standardized procedure for genomic variant reinterpretation and automated genotype-phenotype reassessment in clinical routine
High prevalence of long-term psychophysical olfactory dysfunction in patients with COVID-19
Effectiveness and safety of acupuncture for insulin resistance in women with polycystic ovary syndrome : A systematic review and meta-analysis
Mendelian randomization analysis identified genes pleiotropically associated with central corneal thickness
Association of subcutaneous or intravenous route of administration of casirivimab and imdevimab monoclonal antibodies with clinical outcomes in COVID-19.