Instruct: Identify the main category of the given medRxiv paper based on its title.
Query: Effect of kettlebell training on bone mineral density in two older adults with osteoporosis: a multiple-case study from the BELL trial
Arm-hand boost therapy during inpatient stroke rehabilitation: a pilot randomized controlled trial
Development and Implementation of a scalable and versatile test for COVID-19 diagnostics in rural communities
Increased Long-Term Mortality in Patients Admitted to the Intensive Care Unit with Health-Care Associated Pneumonia
Epigenome-wide DNA methylation profiling of healthy COVID-19 recoverees reveals a unique signature in circulating immune cells
Serological reconstruction of COVID-19 epidemics through analysis of antibody kinetics to SARS-CoV-2 proteins
Correlations Between Community-Level HIV Preexposure Prophylaxis Coverage and Individual-Level Sexual Behaviors among US Men Who Have Sex with Men
Systematic review and meta-analysis of randomized trials of hydroxychloroquine for the prevention of COVID-19
Improvement of behavioural pattern and alpha-synuclein levels in autism spectrum disorder after consumption of a beta-glucan food supplement in a randomized, parallel-group pilot clinical study
Asymptomatic SARS-CoV-2 infection and the demography of COVID-19
Effectiveness of gamified team competition in the context of mHealth intervention for medical interns: a micro-randomized trial
Multi-Omics Signatures of Alcohol Use Disorder in the Dorsal and Ventral Striatum
COVID19-related and all-cause mortality among middle-aged and older adults across the first epidemic wave of SARS-COV-2 infection in the region of Tarragona, Spain: results from the COVID19 TARRACO Cohort Study, March-June 2020.
Understanding the comorbidity between posttraumatic stress severity and coronary artery disease using genome-wide information and electronic health records
Comparison of adverse events between COVID-19 and Flu vaccines
Preventing COVID-19 Outbreaks Through Surveillance Testing in Healthcare Facilities - A Modelling Study
Impact of COVID-19 pandemic on rare diseases- A case study on thalassaemia patients in Bangladesh
Early Covid-19 Treatment With SARS-CoV-2 Neutralizing Antibody Sotrovimab
Post-COVID-19 syndrome in outpatients: a cohort study
Reliability of wastewater analysis for monitoring COVID-19 incidence revealed by a long-term follow-up study
Evaluating a first fully automated interview grounded in MMI methodology: results from a feasibility study
Public engagement and crowdfunding for health research: A global qualitative evidence synthesis and TDR pilot
Cerebrospinal fluid purinomics as a biomarker approach to predict outcome after severe traumatic brain injury
Estimation of Vaccine Efficacy for Variants that Emerge After the Placebo Group Is Vaccinated
Acceptance and intake of COVID-19 vaccines among older Germans
COVID-19 patient accounts of illness severity, treatments and lasting symptoms