Instruct: Identify the main category of the given medRxiv paper based on its title.
Query: Failure of the choroid plexus in Alzheimer's disease
Drug repurposing of metformin for Alzheimer disease: Combining causal inference in medical records data and systems pharmacology for biomarker identification
Exponential increase in neutralizing and spike specific antibodies following vaccination of COVID-19 convalescent plasma donors
The clinical efficacy of faecal microbiota transplantation: An umbrella review of randomized controlled trials
Atypical action updating in a dynamic environment associated with adolescent obsessive-compulsive disorder
Mutation of SLC7A14 Causes Auditory Neuropathy and Retinitis Pigmentosa Mediated by Lysosomal Dysfunction
Vaccine effectiveness of the first dose of ChAdOx1 nCoV-19 and BNT162b2 against SARS-CoV-2 infection in residents of Long-Term Care Facilities (VIVALDI study)
U-shaped effect of blood pressure on structural OCT metrics and retinal blood flow autoregulation in ophthalmologically healthy subjects
Do recent family physician graduates practice differently? A longitudinal study of primary care visits and continuity in four Canadian provinces
When efficacy and adherence conflict: preferences and patterns of response to public health advice during the COVID-19 pandemic
Metabolic disorders and the risk of head and neck cancer: a protocol for a systematic review and meta-analysis
Infants have lower RT-PCR cycle threshold for SARS-CoV-2 in comparison with older children and adults
Povidone iodine, hydrogen peroxide and chlorhexidine mouthwashes reduce SARS-CoV2 burden in whole mouth fluid and respiratory droplets
Feasibility and lessons learned on remote trial implementation from TestBoston, a fully remote, longitudinal, large-scale COVID-19 surveillance study
Clinical characteristics of pregnant women infected with Coronavirus Disease 2019 in China: a nationwide case-control study
How to quantify deaths averted derived from interrupted time-series analyses
When mistrust in the government and scientists reinforce social inequalities in vaccination against Covid-19
The evaluation of a web-based tool for measuring the uncorrected visual acuity and refractive error in keratoconus eyes: a prospective open-label method comparison study
High viral loads: what drives fatal cases of COVID-19 in vaccinees? an autopsy study
Commercially-available heart rate monitor repurposed into a 9-gram standalone device for automatic arrhythmia detection with snapshot electrocardiographic capability: a pilot validation.
A Call For Better Methodological Quality Of Reviews On Using Artificial Intelligence For COVID-19 Detection In Medical Imaging - An Umbrella Systematic Review
Face-to-face interventions to encourage enrolment in cardiac rehabilitation; a scoping review protocol
"We felt like part of a production system": a qualitative study on women's experience of mistreatment during childbirth in Switzerland
Food intake patterns, social determinants and emotions during COVID-19 confinement: an online survey among adults in Panama.
Reduction in left frontal alpha oscillations by transcranial alternating current stimulation in major depressive disorder is context-dependent in a randomized-clinical trial
Gastroesophageal reflux disease is associated with differences in the allograft microbiome, microbial density and inflammation in lung transplantation.