Instruct: Identify the main category of the given medRxiv paper based on its title.
Query: Improved survival by Helicobacter pylori-modulated immunity in gastric cancer patients with S-1 adjuvant chemotherapy
Donor clonal hematopoiesis and recipient outcomes after transplantation
Measuring Voluntary Responses in Healthcare Utilization During and After COVID-19 Pandemic: Evidence from Taiwan
Psychological factors associated with instrumental activities of daily living disability in older adults with knee osteoarthritis
The emergence of SARS-CoV-2 variant(s) and its impact on the prevalence of COVID-19 cases in Nabatieh region, Lebanon
Excess Mortality in Suicide caused by COVID-19 in Japan
Efficacy, safety, and lot to lot immunogenicity of an inactivated SARS-CoV-2 vaccine (BBV152): a double-blind, randomised, controlled phase 3 trial
Contact patterns and HPV-genotype interactions yield heterogeneous HPV-vaccine impacts depending on sexual behaviours: an individual-based model
Donor genetic variants in interleukin-6 and interleukin-6 receptor associate with biopsy-proven rejection following kidney transplantation.
A demonstration of cone function plasticity after gene therapy in achromatopsia
Development and Validation of a Multivariable Risk Prediction Model for Sudden Cardiac Death after Myocardial Infarction (PROFID Risk Model): Study Rationale, Design and Protocol
Association of state social distancing restrictions with nursing home COVID-19 and non-COVID-19 outcomes
Detection of fecal coliforms and SARS-CoV-2 RNA in sewage and recreational waters in the Ecuadorian Coast: a call for improving water quality regulation
Social cognition in frontal and temporal lobe epilepsy: systematic review and meta-analysis
A descriptive analysis of 2020 California Occupational Safety and Health Administration COVID-19-related complaints
Should the governance of individual treatment attempts (''Individuelle Heilversuche	'') include praxis evaluation? Results from qualitative stakeholder interviews.
Duration of viable virus shedding in SARS-CoV-2 omicron variant infection
COVID-19 self-testing in Nigeria: Stakeholders opinions and perspective on its value for case detection
Transmission and Unvaccinated-Only Testing in Populations of Mixed Vaccination Status
Second wave of the Covid-19 pandemic in Delhi, India: high seroprevalence not a deterrent?
Investigating the impact of weakly supervised data on text mining models of publication transparency: a case study on randomized controlled trials
Urine test predicts kidney injury and death in COVID-19
Trends and clinical characteristics of COVID-19 vaccine recipients: a federated analysis of 57.9 million patients primary care records in situ using OpenSAFELY.
Meta-Analysis of the Dynamics of the Emergence of Mutations and Variants of SARS-CoV-2
Dramatic Rise of Seroprevalence Rates of SARS-CoV-2 Antibodies among Healthy Blood Donors: The evolution of a Pandemic
Hospitalisation rates differed by city district and ethnicity during the first wave of COVID-19 in Amsterdam, the Netherlands