Robin Spiller is Professor of Gastroenterology in the Wolfson Digestive Diseases Centre, University Hospital, Nottingham. He has had a long-standing interest in the pathophysiology of funtional bowel diseases particularly those arising after bouts of gastrointestinal infections.

David Grundy is Professor of Biomedical Science at the Unversity of Sheffield. He has for many years pioneered the study of afferent signalling in the gut with particular interest in the mechanisms that mediate and modulate sensory signal transduction.