Instruct: Identify the main category of the given medRxiv paper based on its title.
Query: Placental transcription profiling in 6-23 weeks' gestation reveals differential transcript usage in early development
Persistence of child marriage in rural Bangladesh and impact on maternal and perinatal health: findings from a health and demographic surveillance system
Cross-classification between self-rated health and health status: longitudinal analyses of all-cause mortality and leading causes of death in the UK
Seven-month kinetics of SARS-CoV-2 antibodies and protective role of pre-existing antibodies to seasonal human coronaviruses on COVID-19
Safety and Efficacy of Daclatasvir with Sofosbuvir and Ribavirin in Hepatitis C Virus Infection: A Real World Experience from South Punjab, Pakistan
High household transmission of SARS-CoV-2 in the United States: living density, viral load, and disproportionate impact on communities of color
Premature infants display discriminable behavioural, physiological and brain responses to noxious and non-noxious stimuli
Specific pattern of melanin-concentrating hormone (MCH) neuron degeneration in Alzheimer's disease and possible clinical implications
Is coagulation-protein consumption upon admission linked to COVID-19 severity and mortality?
Overcoming the pitfalls of NGS-based molecular diagnosis of Shwachman-Diamond syndrome
Testing the Triple Network Model of Psychopathology in a Transdiagnostic Neurodevelopmental Cohort
The humoral response to BK polyomavirus in kidney transplant recipients is dominated by IgM antibodies that use a distinct repertoire compared to IgG against the same antigen
Genome-wide association study identifies new locus associated with OCD
Machine learning enabled subgroup analysis with real-world data to inform better clinical trial design
Representation of Racial and Ethnic Minority Populations in Dementia Prevention Trials: A Systematic Review
Self-management of depression and anxiety amongst frail older adults in the United Kingdom: a qualitative study
Lower infant mortality and access to contraception reduce fertility in low- and middle-income nations
Epidemic waves of COVID-19 in Scotland: a genomic perspective on the impact of the introduction and relaxation of lockdown on SARS-CoV-2
The impact of mental health and substance use issues on COVID-19 vaccine readiness: a cross sectional community-based survey in Ontario, Canada
Does 2x2 airplane passenger contact tracing for infectious respiratory pathogens work? A systematic review of the evidence.
Potential impacts of Washington State's wildfire worker protection rule on construction workers
The genomic and transcriptional landscape of primary central nervous system lymphoma
Prenatal smoking, alcohol and caffeine exposure and offspring externalising disorders: A systematic review and meta-analysis
Genetic variability in proteoglycan biosynthetic genes reveals new facets of heparan sulfates diversity. A systematic review and analysis
Predictors of Depression and Anxiety Symptoms in Brazil during COVID-19
Heterogenous Cellular and Humoral Immune Trajectories after SARS-CoV-2 Infection: Compensatory Responses in a Population-Based Cohort