Correspondence to Dr Richard C Pollok, Gastroenterology, St George's University Hospitals NHS Foundation Trust, London SW17 0QT, UK; richard.pollok{at}nhs.net Objective Depression is a potential risk ...
Department of Medicine, University of Sydney, Nepean Hospital, Penrith, Australia Dr N J Talley, Department of Medicine, University of Sydney, Nepean Hospital, Clinical Sciences Building, PO Box 63, ...