Instruct: Identify the main category of Medrxiv papers based on their titles.
Query: Substance Use Onset in High-Risk 9-13 Year-Olds in the ABCD Study
Many Oil Wells, One Evil: Potentially toxic metals concentration, seasonal variation and Human Health Risk Assessment in Drinking Water Quality in Ebocha-Obrikom Oil and Gas Area of Rivers State, Nigeria.
The female protective effect against autism spectrum disorder
Runners with chronic mid-portion Achilles tendinopathy have greater Triceps surae intracortical inhibition than healthy controls
General Practitioner perspectives and wellbeing during the COVID-19 Pandemic: a mixed method social media analysis
The diagnostic and triage accuracy of digital and online symptom checker tools: a systematic review
Effects of COVID-19 in Care Homes - A Mixed Methods Review
Early Detection of Alzheimer's Disease with Low-Cost Neuropsychological Tests: A Novel Predict-Diagnose Approach using Recurrent Neural Networks
Impact of age, gender, ethnicity and prior disease status on immunogenicity following administration of a single dose of the BNT162b2 mRNA Covid-19 Vaccine: real-world evidence from Israeli healthcare workers, December-January 2020
Patient and physician shared decision making behaviors in oncology: Evidence on adequate measurement properties of the iSHARE questionnaires
Elapsed time since BNT162b2 vaccine and risk of SARS-CoV-2 infection in a large cohort
The polarity and specificity of SARS-CoV2 -specific T lymphocyte responses determine disease susceptibility
An integrative analysis of clinical and epigenetic biomarkers of mortality
Mapping evoked fields in primary motor and sensory areas via magnetoencephalography in tetraplegia
Therapeutic effects of different timing for PTCD and ERCP in obstructive severe acute biliary pancreatitis
Modelling the effectiveness and social costs of daily lateral flow antigen tests versus quarantine in preventing onward transmission of COVID-19 from traced contacts
Diagnostic Value of Symptoms for Pediatric SARS-CoV-2 Infection in a Primary Care Setting
Deep Learning Segmentation of Glomeruli on Kidney Donor Frozen Sections
Trends in COVID-19 vaccination intent, determinants and reasons for vaccine hesitancy: results from repeated cross-sectional surveys in the adult general population of Greece during November 2020-June 2021
Feasibility, usability and acceptability of a novel digital hybrid-system for reporting of routine health information in Southern Tanzania A mixed-methods study
Sodium intake and high blood pressure among adults on caloric restriction: a multi-year cross-sectional analysis of the U.S. Population, 2007-2018
COVID-19 risk assessment for the Tokyo Olympic Games
Massive social protests amid the pandemic in selected  Colombian  cities:  Did  they increase COVID-19 cases?
Biallelic and de novo variants in ATP6V0A1 cause progressive myoclonus epilepsy and developmental and epileptic encephalopathy
Increased Burden of Familial-associated Early-onset Cancer Risk among Minority Americans Compared to non-Latino Whites.
Higher knee hypertension in patients with hemiplegia correlates lower lateral and medial meniscus volume in the paretic leg