1. Division of Infectious Diseases, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, Taiwan, Republic of China
2. Division of Hepatogastroenterology, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, Taiwan, Republic of China
3. Department of Laboratory Medicine, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, Taiwan, Republic of China
4. Department of General Surgery, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, Taiwan, Republic of China
5. School of Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan, Republic of China