1. Division of Academic Affairs, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
2. Department of Tropical Hygiene, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
3. Division of Gastroenterology and Hepatology, University of Nebraska Medical Center, Omaha, NE, USA
4. Department of Radiology, Faculty of Medicine, Chulalongkorn University and King Chulalongkorn Memorial Hospital, Bangkok, Thailand
5. Center of Excellence in Hepatitis and Liver Cancer, Department of Biochemistry, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
6. Department of Biochemistry, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
7. Division of Gastroenterology, Department of Medicine, Faculty of Medicine, Chulalongkorn University and King Chulalongkorn Memorial Hospital, Bangkok, Thailand
8. Center of Excellence for Innovation and Endoscopy in Gastrointestinal Oncology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand