1 Department of Pathology, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan.
2 Division of Gastroenterology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan.
3 Department of Pathology, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan. changkc@mail.ncku.edu.tw.
4 Department of Pathology, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan. changkc@mail.ncku.edu.tw.
5 Department of Pathology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, 138 Sheng-Li Road, Tainan, 704, Taiwan. changkc@mail.ncku.edu.tw.