1. Department of Gastroenterology, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, China
2. Division of Gastroenterology and Hepatology, College of Medicine, Mayo Clinic and Mayo Clinic Cancer Center, Rochester, MN, USA
3. Department of Medicine, Faculty of Medicine, Chulalongkorn University and King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Bangkok, Thailand
4. Hollings Cancer Center, Division of Hematology-Oncology, Department of Medicine, Medical University of South Carolina, Charleston, SC, USA
5. Apogee Biotechnology Corporation, Hummelstown, PA, USA