Instruct: Identify the main category of the given Medrxiv paper based on the title.
Query: Functional brain network changes after major surgery and delirium
The external validity of four risk scores predicting 30-day mortality after surgery
Cerebral venous sinus thrombosis (CVST) is not significantly linked to COVID-19 vaccines or non-COVID vaccines in a large multi-state US health system
No evidence for environmental transmission risk of SARS-CoV-2 in the UK's largest urban river system: London as a case study
The association between smoking and anal human papillomavirus in the HPV infection in Men Study
Immune responses after twofold SARS-CoV-2 immunisation in elderly residents and Health Care Workers in nursing homes and homes with assisted living support - Proposal for a correlate of protection
Guiding caregivers through disclosure: a qualitative investigation into caregivers responses to a disclosure intervention for HIV-infected children in Soweto, South Africa
Multiple Cost Optimisation for Alzheimer's Disease Diagnosis
Association between vaccination status and reported incidence of post-acute COVID-19 symptoms in Israel: a cross-sectional study of patients tested between March 2020 and November 2021
Racial/ethnic disparities in sleep in mothers and infants during the Covid-19 pandemic
The protective association between statins use and adverse outcomes among COVID-19 patients: a systematic review and meta-analysis
Immune response to third SARS-CoV-2 vaccination in seronegative kidney transplant recipients: possible improvement by mycophenolate mofetil reduction
The stochastic dynamics of early epidemics: probability of establishment, initial growth rate, and infection cluster size at first detection
A Single Drop of Fingerstick Blood for Quantitative Antibody Response Evaluation After SARS-CoV-2 Vaccination
Risk-Averse Multi-Stage Stochastic Programming to Optimizing Vaccine Allocation and Treatment Logistics for Effective Epidemic Response
SARS-CoV-2 antibody prevalence and determinants of six ethnic groups living in Amsterdam, the Netherlands: a population-based cross-sectional study, June-October 2020
Impact of the COVID-19 pandemic on routine surveillance for adults with chronic hepatitis B virus (HBV) infection in the UK.
Environmental Exposure to Respirable Particles and Estimated Risk of Sarcoidosis: A systematic Review and Meta-Analysis
Genomic Surveillance in Japan of AY.29--A New Sub-lineage of SARS-CoV-2 Delta Variant with C5239T and T5514C Mutations
Autoimmune profiling suggests paraneoplastic etiology in pediatric ROHHAD
Association Between Ultrasonography Fetal Anomalies and Autism Spectrum Disorder
Epigenome-wide contributions to individual differences in childhood phenotypes: A GREML approach
A Progeroid Syndrome Caused by RAF1 deficiency Underscores the importance of RTK signaling for Human Development
Increased angiotensin-converting enzyme 2, sRAGE and immune activation, but lowered calcium and magnesium in COVID-19: association with chest CT abnormalities and lowered peripheral oxygen saturation.
Analysis across Taiwan Biobank, Biobank Japan and UK Biobank identifies hundreds of novel loci for 36 quantitative traits
NeuroEPO improves cognition in Parkinson's disease. Preliminary report.