About the Authors
University of Liverpool, Alder Hey Children's Hospital, Liverpool, United Kingdom
Department of Biostatistics, Faculty of Medicine, University of Liverpool, Liverpool, United Kingdom
RLS is a member of the PLoS Board of Directors.
ICMJE criteria for authorship read and met: IPS RLS PRW. Agree with the manuscript's results and conclusions: IPS RLS PRW. Designed the experiments/the study: IPS RLS PRW. Analyzed the data: IPS PRW. Collected data/did experiments for the study: IPS PRW. Wrote the first draft of the paper: IPS. Contributed to the writing of the paper: IPS RLS PRW. Conceived the initial idea for the review: PRW.