1. Department of Laboratory, Chung-Kang Branch; Cheng-Ching General Hospital; Taichung Taiwan
2. Institute of Medicine, Chung Shan Medical University; Taichung Taiwan
3. Division of Gastroenterology, Department of Internal Medicine; Kaohsiung Medical University Hospital; Kaohsiung Taiwan
4. Division of Chest Medicine, Department of Internal Medicine; Taichung Veterans General Hospital; Taichung Taiwan
5. Institute of Biochemistry, Microbiology and Immunology; Chung Shan Medical University; Taichung Taiwan
6. Department of Biochemistry, School of Medicine; Chung Shan Medical University; Taichung Taiwan
7. Clinical Laboratory; Chung Shan Medical University Hospital; Taichung Taiwan
8. Center for Stem Cell Research; Kaohsiung Medical University; Kaohsiung Taiwan