Instruct: Identify the main category of the given medRxiv paper based on its title.
Query: The I-KID Study Protocol: Evaluation of Efficacy, Outcomes and Safety of a New Infant Haemodialysis and Ultrafiltration Machine in Clinical Use: a Randomised Clinical Investigation using a Cluster Stepped-wedge Design.
Indirect impact on number of admitted children with COVID-19 in the first three months of emergency use of two vaccines, in Rio de Janeiro, Brazil
The quality of vital signs measurements in electronic medical records varies by hospital, specialty, and patient demographics
Characterization of antibody response in asymptomatic and symptomatic SARS-CoV-2 infection
The General Psychopathology Factor from Early to Middle Childhood: Longitudinal Genetic and Risk Analyses
Predictors of SARS-CoV-2 infection following high-risk exposure: a test-negative design case-control study
Mesocorticolimbic system abnormalities in chronic cluster headache patients: a neural signature?
Use of portable air cleaners to reduce aerosol transmission on a hospital COVID-19 ward
Simulation of epidemic models with generally distributed sojourn times
A novel 5E training model and other methods implemented for rapid readiness at an ad-hoc COVID-19 facility in India
Viability RT-PCR for SARS-CoV-2: a step forward to solve the infectivity quandary
Estimation of the Lifetime Quality-Adjusted Life Years (QALYs) Lost Due to Syphilis acquired in the United States in 2018
An integrated rural health system baseline assessment of COVID-19 preparedness in Siaya Kenya
Cooccurrence of N501Y, P681R and other key mutations in SARS-CoV-2 Spike
Value-based pricing of a COVID-19 vaccine
Statistical Design and Analysis of Diagnostic Tests for Mutating Viruses
Mathematical modelling of COVID-19 transmission dynamics with vaccination: A case study in Ethiopia
Antiretroviral therapy associated lipodystrophy; learning from the past.
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) seroprevalence: Navigating the absence of a gold standard
Comparing human and AI performance in medical machine learning: An open-source Python library for the statistical analysis of reader study data
Association between physical-activity trajectories and cognitive decline in adults 50 years of age or older
Long Term Accuracy of SARS-CoV-2 Interferon-γ Release Assay and its Application in Household Investigation
Aerial transmission of SARS-CoV-2 virus (and pathogens in general) through environmental e-cigarette aerosol
The multi-dimensional challenges of controlling SARS-CoV-2 transmission in indoor spaces: Insights from the linkage of a microscopic pedestrian simulation and virus transmission models
Psychological factors underpinning vaccine willingness in Israel, Japan and Hungary
COVID-19 vaccines and evidence-based medicine