1. Department of Anatomy, School of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan.
2. Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan.
3. Department of Physiology, College of Medicine, National Cheng Kung University, Tainan 70101, Taiwan.
4. Institute of Molecular Medicine, College of Medicine, National Cheng Kung University, Tainan 70101, Taiwan.
5. Division of Colorectal Surgery, Department of Surgery, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan 70101, Taiwan.
6. Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan 70101, Taiwan.