About the Authors

Jamie J. Kirkham

jjk@liv.ac.uk

Affiliation MRC North West Hub for Trials Methodology Research, Department of Biostatistics, University of Liverpool, Liverpool, United Kingdom

Kerry M. Dwan

Affiliation Cochrane Editorial Unit, London, United Kingdom

Anette Blümle

Affiliation Cochrane Germany, Faculty of Medicine, University of Freiburg, Freiburg, Germany

Erik von Elm

Affiliation Cochrane Switzerland, Institut Universitaire de Médecine Sociale et Préventive, Lausanne, Switzerland

Paula R. Williamson

Affiliation MRC North West Hub for Trials Methodology Research, Department of Biostatistics, University of Liverpool, Liverpool, United Kingdom

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: PRW. Performed the experiments: KMD JJK AB. Analyzed the data: KMD JJK AB EvE PRW. Wrote the paper: JJK KMD AB EvE PRW.