Instruct: Identify the main category of the given Medrxiv paper based on its title.
Query: A new compartment model of COVID-19 transmission: The broken-link model
Profiling lockdown adherence and poor coping responses towards the COVID-19 crisis in an international cross-sectional survey
A mathematical model for repetitive behaviors of Covid-19
Aerosol emission from the respiratory tract: an analysis of relative risks from oxygen delivery systems
Azithromycin in patients with Covid-19; a systematic review and metanalysis
Association of Visual Impairment with Brain Structure
TIGIT as a therapeutic target of HPV-positive head and neck squamous cell carcinomas
A Second Wave? What Do People Mean By COVID Waves?- A Working Definition of Epidemic Waves
Medical student residency preferences and motivational factors: a longitudinal, single-institution perspective
Trends in medical and surgical admission length of stay by race/ethnicity and socioeconomic status: a time series analysis
Systemic and Genetic Risk Factors for Reticular Macular Disease and Soft Drusen in Age- Related Macular Degeneration
The hospital burden of intergenerational contact with the welfare system: A whole-of-population liked data study
HISTOPATHOLOGICAL AND IMMUNOHISTOCHEMICAL PROGNOSTIC FACTORS IN HIGH-GRADE NON-ENDOMETRIOID CARCINOMAS OF THE ENDOMETRIUM (HG-NECs). IS IT POSSIBLE TO IDENTIFY SUB-GROUPS AT INCREASED RISK?
Phase 1 safety and pharmacokinetics studies of BRII-196 and BRII-198, SARS-CoV-2 spike-targeting monoclonal antibodies
Hydroxychloroquine Prophylaxis against Coronavirus Disease-19: Practice Outcomes among Health-Care Workers
PCR assay to enhance global surveillance for SARS-CoV-2 variants of concern
Real-world clinical performance of SARS-CoV-2 point-of-care diagnostic tests: a systematic review of available trials as per April, 4, 2021
Triglyceride Glucose Index Predicts Risk of Adverse Cardio-metabolic and Mortality Outcomes Among Chinese Adults: A Territory-Wide Longitudinal Study
Acute Endotheliitis (Type 3 Hypersensitivity Vasculitis) in Ten COVID-19 Autopsy Brains
Development and performance of a population-based risk stratification model for COVID-19
Total nodule number is an independent prognostic factor in resected stage III non-small cell lung cancer: a deep learning powered study
Substance abuse and the risk of severe COVID-19: Mendelian randomization confirms the causal role of opioids but hints a negative causal effect for cannabinoids.
Type 2 Diabetes and Risk of Early-Onset Colorectal Cancer
Rapid, Affordable and Scalable SARS-CoV-2 Detection from Saliva
Artificial Intelligence Enables Quantitative Assessment of Ulcerative Colitis Histology
Examining the Relationship between COVID-19 Vaccinations and Reported Incidence