Instruct: Identify the main category of the given Medrxiv paper based on the title.
Query: The effect of maternal BMI, smoking and alcohol on congenital heart diseases: a Mendelian randomization study
Retrospective study of the first wave of COVID-19 in Spain: analysis of counterfactual scenarios
Parents perceptions and intention to vaccinate their children against COVID-19: Results from a cross-sectional national survey in India
Social cognition deficits and its biometric signatures in the behavioral variant of Alzheimer's disease
Peripheral artery disease affects the legs of claudicating patients in a diffuse manner irrespective of the level of the arterial tree primarily involved.
Common genetic variation associated with Mendelian disease severity revealed through cryptic phenotype analysis
A Retrospective Cohort Study of COVID-19 among Children in Fulton County, Georgia, March 2020 - June 2021
Development of Prognostic Models for Survival and Care Status in Sporadic Creutzfeldt-Jakob disease
LESSONS FROM THE COVID-19 THIRD WAVE IN CANADA: THE IMPACT OF VARIANTS OF CONCERN AND SHIFTING DEMOGRAPHICS
Q3: An ICU Acuity Score for Exploring the Effects of Changing Acuity Throughout the Stay
Single site performance of AI software for stroke detection and triage
Covid-19 in the California State Prison System: An Observational Study of Decarceration, Ongoing Risks, and Risk Factors
Systematic Review and Meta-analysis on COVID-19 Vaccine Hesitancy
Islamic Perspective on Nursing and the Philosophy of Science
COVID-19 Pandemic Response in a Migrant Farmworker Community: Excess Mortality, Testing Access and Contact Tracing in Immokalee, Florida
Red flags useful to screen for gastrointestinal and hepatic diseases in patients with shoulder pain: a scoping review protocol
Persisting Salivary IgG against SARS-CoV-2 at 9 Months After Mild COVID-19: A Complementary Approach to Population Surveys
Multi-centre post-implementation evaluation of SARS-CoV-2 antigen-based point of care tests used for asymptomatic screening of continuing care healthcare workers
Reduced dementia incidence following varicella zoster vaccination in Wales 2013--2020
SARS-CoV-2 transmission dynamics in South Africa and epidemiological characteristics of the Omicron variant
Identification and application of plasmatic microRNA expression quantitative trait loci (miR-QTL) at first trimester of pregnancy
Homologous and Variant-Specific Memory B-Cell and Antibody Responses after SARS-CoV-2 mRNA Vaccination
Women Carry the Weight of Deprivation on Physical Inactivity: Moderated Mediation Analyses in Two Large-Scale Samples
Factors Associated with the Acceptance and Willingness of COVID-19 Vaccination among Chinese Healthcare Workers
A protocol for a multicentre observational study across an integrated care system to understand the effect of living with frailty on access to video consultations
Protocol for a prospective, hospital-based registry of pregnant women with SARS-CoV-2 infection in India: PregCovid Registry study