About the authors

M Fried

Michael Fried is Director of the Division of Gastroenterology and Hepatology at the University Hospital Zürich, Zürich Switzerland.

EMM Quigley

Eamonn MM Quigley is President of the World Gastroenterology Organisation and Professor of Medicine and Human Physiology at the University College Cork, Cork, Ireland.

RH Hunt

Richard H Hunt is Professor of Medicine and Gastroenterology at McMaster University Health Science Centre, Hamilton, ON, Canada.

G Guyatt

Gordon Guyatt is a Professor in the Department of Clinical Epidemiology and Biostatistics and the Department of Medicine at McMaster University, Hamilton, ON, Canada.

BO Anderson

Benjamin O Anderson is Professor of Surgery at the University of Washington, Joint Member at the Fred Hutchinson Cancer Research Center in Seattle, WA, USA, and Chair and Director of the Breast Health Global Initiative.

DJ Bjorkman

David J Bjorkman is Dean of the University of Utah School of Medicine, Salt Lake City, UT, USA.

MJG Farthing

Michael JG Farthing is the Vice Chancellor of the University of Sussex, Brighton, UK.

SS Fedail

Suleiman S Fedail is Chairman of Fedail Medical Center, Khartoum, Sudan.

R Green-Thompson

Ronald Green-Thompson is a Professor in the Kwa-Zulu Natal Department of Health, Durban, South Africa.

J Hampton

John Hampton is Emeritus Professor of Cardiology at the Queens Medical Centre, University Hospital of Nottingham, Nottingham, UK.

J Krabshuis

Justus Krabshuis is Director of Highland Data, Tourtoirac, France.

L Laine

Loren Laine is Professor of Medicine at the University of Southern California School of Medicine, Los Angeles, CA, USA.

R Horton

Richard Horton is Editor-In-Chief of The Lancet, London, UK.