Instruct: Identify the main category of the given Medrxiv paper based on its title.
Query: Reverse causal effect of atrial fibrillation on 17 site-specific cancer risk: A Mendelian randomization study
Intravenous Iron Decreases Rehospitalizations but Does not Change mortality in Patients Admitted with Acute Heart Failure and Iron Deficiency: A Systematic review and Meta-analysis
The CT Scan Lung Severity Score and Vaccination Status in COVID-19 patients during the Second Wave in India: Perspective of an Independent Radiology Practice
A brain structural connectivity biomarker for diagnosis of autism spectrum disorder in early childhood
Preclinical Efficacy in Investigator's Brochures: Stakeholders' views on measures to improve Completeness and Robustness
A statewide analysis of SARS-CoV-2 transmission in New York
Using proper mean generation intervals in modelling of COVID-19
COVID-19 vaccine hesitancy in the UK: A longitudinal household cross-sectional study
When time-dependence in disease outcome risk is not captured by impact evaluation modeling studies: a measles vaccination case study
Lesion covariance networks reveal proposed origins and pathways of diffuse gliomas
Factors associated with secondhand smoke exposure among non-smoking employees in the workplace: A cross-sectional study in Qingdao, China
Booster and anergic effects of the Covishield vaccine among healthcare workers in South India
Analysis of 2.1 million SARS-CoV-2 genomes identifies mutations associated with transmissibility
NHS CHECK: protocol for a cohort study investigating the psychosocial impact of the COVID-19 pandemic on healthcare workers
Modifiable lifestyle activities affect cognition in cognitively healthy middle-aged individuals at risk for late-life Alzheimer's Disease.
Proteomic deconvolution reveals distinct immune cell fractions in different body sites in SARS-Cov-2 positive individuals
Identification of clinical features associated with mortality in COVID-19 patients
Projected health impact of post-discharge malaria chemoprevention among children with severe malarial anaemia in Africa
Croup during the COVID-19 Omicron Variant Surge
Failure of the choroid plexus in Alzheimer's disease
Humoral immune response to Covid-19 vaccination in diabetes: age-dependent but independent of type of diabetes and glycaemic control-the prospective COVAC-DM cohort study
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
High concordance of 70-gene recurrence risk signature and 80-gene molecular subtyping signature between core needle biopsy and surgical resection specimens in early-stage breast cancer
IDENTIFICATION OF GENETICALLY RELATED HCV INFECTIONS AMONG SELF-DESCRIBED INJECTING PARTNERSHIPS
Effectiveness of SARS-CoV-2 mRNA Vaccines for Preventing Covid-19 Hospitalizations in the United States
The impact of demographic factors on numbers of COVID-19 cases and deaths in Europe and the regions of Ukraine