About the Authors
Ottawa Methods Centre, Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
Department of Epidemiology and Community Medicine, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
Family Health International, Research Triangle Park, North Carolina, United States of America
Centre for Statistics in Medicine, University of Oxford, Oxford, United Kingdom
Competing interests: DM, KFS, IS, and DGA are members of the EQUATOR Network. DM, KFS, and DGA are members of the CONSORT executive. DM and DGA are members of the PRISMA executive. DM is on the Editorial Board of PLoS Medicine.
ICMJE criteria for authorship read and met: DM KFS IS DGA. Wrote the first draft of the paper: DM. Contributed to the writing of the paper: KFS IS DGA.