1. Chang Gung Traditional Chinese Medicine Hospital and Chang Gung University, Graduate Institute of Traditional Chinese Medicine, 5, Fu-Shing Street, Kwei-Shan, Taoyuan, Taiwan
2. School of Chinese Medicine and Institute of Chinese Medical Science, China Medical College, Taichung, Taiwan
3. Division of Gastroenterology, Department of Internal Medicine, China Medical College Hospital, Taichung, Taiwan
4. Department of Life Science, School of Life Science, National Yang-Ming University, Taipei, Taiwan
5. Department of Internal Medicine, Jen-Ai Hospital, Taichung, Taiwan