1. Department of Surgery, Chang Gung Memorial Hospital, Chiayi, Taiwan
2. Department of Surgery, Chang Gung Memorial Hospital-Chiayi, Chang Gung Memorial Hospital-Kaohsiung Medical Center and Chang Gung University College of Medicine, Kaohsiung, Taiwan
3. Department of Pathology, Chang Gung Memorial Hospital-Chiayi, Chang Gung Memorial Hospital-Kaohsiung Medical Center and Chang Gung University College of Medicine, Kaohsiung, Taiwan