About the Authors

Belinda J. Burford

belinda@burford.co

Affiliation Cochrane Public Health Group and Jack Brockhoff Child Health and Wellbeing Program, Melbourne School of Population and Global Health, the University of Melbourne, Melbourne, Victoria, Australia

Vivian Welch

Affiliations Ottawa Hospital Research Institute, University of Ottawa, Ottawa, Canada, Elizabeth Bruyere Research Institute, University of Ottawa, Ottawa, Canada

Elizabeth Waters

Affiliation Cochrane Public Health Group and Jack Brockhoff Child Health and Wellbeing Program, Melbourne School of Population and Global Health, the University of Melbourne, Melbourne, Victoria, Australia

Peter Tugwell

Affiliation Ottawa Hospital Research Institute, University of Ottawa, Ottawa, Canada

David Moher

Affiliation Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, Canada, Department of Epidemiology & Community Medicine, University of Ottawa, Ottawa, Canada

Jennifer O’Neill

Affiliation Ottawa Hospital Research Institute, University of Ottawa, Ottawa, Canada

Tracey Koehlmoos

Affiliation Centre for Equity & Health Systems, International Centre for Diarrhoeal Disease Research (ICDDRB), Dhaka, Bangladesh, Dhaka

Mark Petticrew

Affiliation Department of Social and Environmental Health Research, London School of Hygiene and Tropical Medicine, London, United Kingdom

Competing Interests

Vivian Welch, Peter Tugwell and Mark Petticrew are co-convenors of the Campbell and Cochrane Equity Methods Group which aims to “encourage authors of Campbell and Cochrane reviews to include explicit descriptions of the effect of the interventions not only on the whole population but to describe their effect upon the disadvantaged and/or their ability to reduce socioeconomic inequalities in health and to promote their use to the wider community.” David Moher is one of the developers of PRISMA. This does not alter the authors’ adherence to all the PLOS ONE policies on sharing data and materials

Author Contributions

Conceived and designed the experiments: BB VW EW PT DM JON TK MP. Performed the experiments: BB. Analyzed the data: BB. Wrote the manuscript: BB VW EW PT DM JON TK MP.