Instruct: Identify the main category of the given medRxiv paper based on its title.
Query: Addressing selection bias in the UK Biobank neurological imaging cohort
Diversity in antibody titer at an average of 87 days after the second dose of BNT162b2 mRNA coronavirus disease 2019 vaccine: data from a predominantly elderly population in a practice in Tokyo
Contribution of endogenous and exogenous antibodies to clearance of SARS-CoV-2 during convalescent plasma therapy
Muscle Strength and Muscle Mass as Predictors of Hospital Length of Stay in Patients with Moderate to Severe COVID-19: A Prospective Observational Study
The Burden of and Factors Associated with Age-Related Eye Diseases in Arab American Adults
Low CD4/CD8 ratio predicts cancer risk among adults with HIV
An Ecological Study to Investigate Links Between Atmospheric Pollutants From Farming and SARS-CoV-2 Mortality
Effectiveness of Covid-19 Vaccines in the United States Over 9 Months: Surveillance Data from the State of North Carolina
Genetic evidence supports the development of SLC26A9 targeting therapies for the treatment of lung disease
Intact corticostriatal and altered subcortical circuits in chronic pain
A Model to Predict In-hospital Mortality in Elderly Patients with Community-acquired Pneumonia: a Retrospective Study
The impact of education inequality on rheumatoid arthritis risk is mediated by smoking and body mass index: mendelian randomization study
Beliefs associated with Intentions of Non-Physician Healthcare Workers to Receive the COVID-19 Vaccine in Ontario, Canada
Change in stroke presentations during COVID-19 pandemic in South-Western Sydney.
The "Great Lockdown": Inactive Workers and Mortality by Covid-19
The impact of chemosensory dysfunctions on weight loss
Heterologous vaccination with inactivated and mRNA vaccines increases B and T cell responses to SARS-CoV-2
Protective effect of a first SARS-CoV-2 infection from reinfection: a matched retrospective cohort study using PCR testing data in England
Performance of a Multisensor Smart Ring to Evaluate Sleep: In-Lab and Home-Based Evaluation Relative to Polysomnography and Actigraphy: Importance of Generalized Versus Personalized Scoring
Understanding the impact of the Covid-19 pandemic on delivery of rehabilitation in specialist palliative care services: An analysis of the CovPall-Rehab survey data.
A Phase II Study Repurposing Atomoxetine for Neuroprotection in Mild Cognitive Impairment
Direct Simulation of the CoVid-19 epidemic
Asymptomatic or mild symptomatic SARS-CoV-2 infection elicits durable neutralizing antibody responses in children and adolescents
The comparability of Anti-Spike SARS-CoV-2 antibody tests is time-dependent: a prospective observational study
Underdispersion in the reported Covid-19 case and death numbers may suggest data manipulations
A Real World Evaluation of the safety and immunogenicity of the Covishield vaccine, ChAdOx1 nCoV- 19 Corona Virus Vaccine (Recombinant) in Health Care Workers (HCW) in National Capital Region (NCR) of India: A preliminary report