1. Department of Chemistry and Biochemistry and Center for Nano Bio-Detection (AIM-HI), National Chung Cheng University, 168 University Road, Ming-Hsiung, Chia-Yi62142, Taiwan
2. Division of Gastroenterology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung80756, Taiwan
3. Faculty of Medicine, Department of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung807, Taiwan