Instruct: Identify the main category of the given Medrxiv paper based on the title.
Query: Risk of Suicide Ideation in Comorbid Substance Use Disorder and Major Depression.
Generalized and specific whole-brain white matter abnormalities in human cocaine and heroin use disorders
Workplace infection control measures and romantic activities of workers during COVID-19 pandemic: a prospective cohort study in Japan
Implementation of the 2021 molecular ESGO/ESTRO/ESP risk groups in endometrial cancer
Transmission characteristics of SARS-CoV-2 variants of concern: Rapid Scoping Review
Associations between e-cigarette use and e-cigarette flavors with cigarette smoking quit attempts and quit success: Evidence from a US large, nationally representative 2018-2019 survey
Drug-induced epigenomic plasticity reprograms circadian rhythm regulation to drive prostate cancer towards androgen-independence
You're too young to have an eye problem: Reasons for nonadherence to referrals for follow-up eye care for schoolchildren in Nigeria -- a descriptive qualitative study
Early assessment of the clinical severity of the SARS-CoV-2 Omicron variant in South Africa
Artificial Intelligence for context-aware surgical guidance in complex robot-assisted oncological procedures: an exploratory feasibility study
Estimation of COVID-19 recovery and decease periods in Canada using machine learning algorithms
Monitoring and forecasting the SARS-CoV-2 pandemic in France
Learning about COVID-19 across borders: Public health information and adherence among international travellers to the UK
Parapneumonic effusions related to Streptococcus pneumoniae: serotype and disease severity trends
Modelling the impact of household size distribution on the transmission dynamics of COVID-19
Clinical Decision Support in Cardiovascular Medicine: Effectiveness, Implementation Barriers, and Regulation
Appearance of IgG to SARS-CoV-2 in saliva effectively indicates seroconversion in mRNA vaccinated immunocompromised individuals
Reinfection by the SARS-CoV-2 Gamma variant in blood donors in Manaus, Brazil
Household COVID-19 risk and in-person schooling
Impaired alpha and beta modulation in response to social stimuli in children with autism spectrum disorder
The second wave of SARS-CoV-2 infections and COVID-19 deaths in Germany - driven by values, social status and migration background? A county-scale explainable machine learning approach
Assessment of COVID-19 risk and prevention effectiveness among spectators of mass gathering events
Youth susceptibility to tobacco use: Is it general or specific?
Histone H3 lysine 27 acetylation profile undergoes two global shifts in undernourished children and suggests one-carbon metabolite insufficiency
A multiplex serological assay for the characterization of IgG immune response to SARS-CoV-2
Variation in COVID-19 excess mortality by age, sex, and province within Italy