Instruct: Identify the main category of Medrxiv papers based on their titles.
Query: The effects of COVID-19 on European healthcare provision for people with major depressive disorder: a scoping review protocol
Global burden of mental health problems among children and adolescents during COVID-19 pandemic: A systematic umbrella review
Imaging synaptic microstructure and synaptic loss in vivo in early Alzheimers Disease
Multiplex RT-qPCR assay (N200) to detect and estimate prevalence of multiple SARS-CoV-2 Variants of Concern in wastewater
Increased visual and cognitive demands emphasize the importance of meeting visual needs at all distances while driving
Spread of infection and treatment interruption among Japanese workers during the COVID-19 pandemic: a cross-sectional study
Predictors for Reactogenicity and Humoral Immunity to SARS-CoV-2 Following Infection and mRNA Vaccination: A Regularized Mixed-Effects Modelling Approach
Assessing Depression and Suicidality Among Recently Unemployed Persons with Obstructive Sleep Apnea and Socioeconomic Inequality
Financial Meltdown in Swing Hospitals during the COVID-19 Outbreak
Birth anthropometry among three Asian ethnic groups in Singapore -- new growth charts
Founder effect contributes to the unique pattern of SARS-CoV-2 variant B.1.1.519 emergence in Alaska
COVID-19 propagation by diffusion - a two-dimensional approach for Germany
What if risk factors influenced the variability of health outcomes as well as the mean? Evidence and implications
Performance of RT-PCR on saliva specimens compared to nasopharyngeal swabs for the detection of SARS-CoV-2 in children: A prospective comparative clinical trial
Surveillance of COVID-19 cases associated with dental settings using routine health data from the East of Scotland with a description of efforts to break chains of transmission from October 2020 to December 2021.
A study of the benefits of vaccine mandates and vaccine passports for SARS-CoV-2
Topology-Aware Optimisation of Vaccination Strategy for Minimising Virus Spreading
ChAdOx1 n-COV-19 Vaccine Side Effects Among Health Care Workers in Trinidad and Tobago
ROCCA study protocol and interim analysis on safety of Sputnik V vaccine (Gam-COVID-Vac) in the Republic of San Marino: an observational study using active surveillance
Intensity of home-based telework and work engagement during the COVID-19 pandemic
Trust boosts recovery of countries from COVID-19
A national mixed-mode seroprevalence random population-based cohort on SARS-CoV-2 epidemic in France: the socio-epidemiological EpiCov study
Thromboembolic risk in hospitalised and non-hospitalised Covid-19 patients: A self-controlled case series analysis of a nation-wide cohort
Effective post-exposure prophylaxis of Covid-19 associated with hydroxychloroquine: Prospective dataset re-analysis incorporating novel, missing data
Using quantitative MRI to track cerebral damage in multiple sclerosis: a longitudinal study
Incidence of COVID-19 reinfection: an analysis of outpatient-based data in the United States of America