Instruct: Identify the main category of the given Medrxiv paper based on its title.
Query: National Trends and Disparities in Hospitalization for Hypertensive Emergencies Among Medicare Beneficiaries, 1999-2019
Automated diagnosis of atrial fibrillation in 24-hour Holter recording based on deep learning：a study with randomized and real-world data validation
Efficacy and safety of novel probiotic formulation in adult Covid19 outpatients: a randomized, placebo-controlled clinical trial
Coronavirus vaccination rates in cultural areas in Germany
HDMAX2: A framework for High Dimensional Mediation Analysis with application to maternal smoking, placental DNA methylation and birth outcomes
Impact and effectiveness of social distancing for COVID-19 mitigation -- A transnational and transregional study
Post Operative Pain Management (POPM) and Patient Satisfection : A Tertiary Care Hospital Experience
Prevalence of anxiety, depression, and stress among teachers during the COVID-19 pandemic: Systematic review
Knowledge, Attitude, and Practices towards SARS-COV-2 Infection in the United Arab Emirates Population: a Cross-sectional Survey-based Study
SARS-CoV-2 shedding, infectivity and evolution in an immunocompromised adult patient
Vaccine-induced antibody level predicts the clinical course of breakthrough infection of COVID-19 caused by delta and omicron variants: a prospective observational cohort study
Quantifying the relationship between sub-population wastewater samples and community-wide SARS-CoV-2 seroprevalence
Genome-wide association meta-analysis identifies novel ancestry-specific primary open-angle glaucoma loci and shared biology with vascular mechanisms and cell proliferation
Grandfathers and Grandsons: Social Security Expansion and Child Health in China
Localising Vaccination Services: Qualitative Insights on an Orthodox Jewish Collaboration with Public health during the UK coronavirus Vaccine Programme
Anti-SARS-CoV-2 cellular immunity in 571 vaccinees assessed using an interferon-γ release assay
Continuous monitoring of SARS-CoV-2 RNA in urban wastewater from Porto, Portugal: sampling and analysis protocols
Comparison of immunogenicity and safety of inactivated, adenovirus-vectored and heterologous adenovirus-vectored/mRNA vaccines in patients with systemic lupus erythematosus and rheumatoid arthritis: a prospective cohort study
Improving postpartum hemorrhage risk prediction using longitudinal electronic medical records
A comparison of performance metrics for cloth face masks as source control devices for simulated cough and exhalation aerosols
Use of autologous platelet derivatives for secondary alveoloplasty in patients with cleft lip and palate: a protocol for a systematic review and meta-analysis
A prospective observational study on BBV152 coronavirus vaccine use in adolescents and comparison with adults- first real-world safety analysis
Comprehensive Joint Modeling of First-Line Therapeutics in Non-Small Cell Lung Cancer
Effective Connectivity of LSD-induced Ego Dissolution
Real-time genomics to track COVID-19 post-elimination border incursions in Aotearoa New Zealand
Virological and Serological Characterization of SARS-CoV-2 Infections Diagnosed After mRNA BNT162b2 Vaccination.