2 Department of Gastroenterology, St Mark’s Hospital, Harrow, UK 3 Department of Gastroenterology, Llandough Hospital, Penarth, UK 4 Department of Gastroenterology, St James’s University Hospital, ...
Correspondence to Dr Madhusudan Grover, Enteric NeuroScience Program, Division of Gastroenterology & Hepatology, Mayo Clinic, 200 First Street SW, Rochester MN 55905, USA; ...