1. Department of Gastroenterology and HepatologyLinkou Chang Gung Memorial Hospital Taoyuan Taiwan
2. College of MedicineChang Gung University Taoyuan Taiwan
3. Division of General Surgery, Department of SurgeryLinkou Chang Gung Memorial Hospital Taoyuan Taiwan
4. Division of Colon and Rectal Surgery, Department of SurgeryLinkou Chang Gung Memorial Hospital Taoyuan Taiwan
5. Department of PathologyLinkou Chang Gung Memorial Hospital Taoyuan Taiwan