| Affiliation: | Current affiliations: Division of Gastroenterology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA (M.R., C.C.T.), Department of Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA (R.S.S.), Division of Gastroenterology, Washington University School of Medicine, St. Louis, Missouri, USA (D.K.M.), Gastroenterology and Nutrition Service, Memorial Sloan Kettering Cancer Center, New York, New York, USA (C.J.D.), Division of Digestive Diseases, Beth Israel Medical Center, New York, New York, USA (D.L.C.-L.) |
