1. Gastroenterology, S-111-GI; University of Washington; Veterans Affairs Puget Sound Health Care System 1660 S. Columbian Way Seattle USA WA 98108
2. Bond University; Faculty of Health Sciences and Medicine; Gold Coast Queensland Australia 4229
3. Duke University Medical Center; Department of Gastroenterology and Hepatology; Sands Building Room 336 Research Drive Box 3083 Durham USA C 27710