Jonathan Cohen

Adam Haycock, Consultant Physician &Gastroenterologist, St Mark's Hospital for Colorectal andIntestinal Disorders, London, UK Jonathan Cohen, Clinical Professor of Medicine, NewYork University School of Medicine, New York, USA Brian P. Saunders, Consultant Gastroenterologist, StMark's Hospital for Colorectal and Intestinal Disorders,London, UK Peter B. Cotton, Professor of Medicine, MedicalUniversity of South Carolina, Charleston, USA Christopher B. Williams, Honorary Physician, StMark's Hospital for Colorectal and Intestinal Disorders,London, U