Department of Internal Medicine & Health Management Center, National Taiwan University Hospital, Taipei, Taiwan
Chinese university of Hong Kong, Princes of Walses Hospital, Hong Kong, Hong Kong
Department of Medicine, National University Hospital, Singapore, Singapore
Mount Sinai School of Medicine, New York, New York, United States
University of Massachusetts Memorial Medical Center, Worcester, Massachusetts, United States
University of Tampere Medical School, Tampere, Finland
Ospedale Maggiore - Policlinico, Milano, Italy
Atlanta Gastroenterology, Atlanta, Georgia, United States
Rambam Medical Center, Haifa, Israel
Private Practice, New York, New York, United States
Oregon Health Sciences University, Portland, Oregon, United States
Royal Brisbane and Women's Hospital, Herston, Queensland, Australia
Minnesota Gastroenterology Associates, Plymouth, Minnesota, United States
Hospital São Camilo, San Paulo, Brazil
Hospital de Especialidades, Goiania, Brazil
Indiana University Hospital, Indianapolis, Indiana, United States
Private Medical Facility, New York, New York, United States
Mayo Clinic Arizona, Scottsdale, Arizona, United States
Royal Prince Alfred Hospital, Camperdown, New South Wales, Australia
Royal Brisbane and Women's Hospital, Herston, Queensland, Australia
Repatriation General Hospital, Daw Park, South Australia, Australia