1. Division of Gastroenterology, Changhua Christian Hospital, Changhua, Taiwan
2. Division of Gastroenterology, Yuanlin Christian Hospital, Changhua, Taiwan
3. General Education Center, Chienkuo Technology University, Changhua, Taiwan
4. Department of Electrical Engineering, Chung Yuan Christian University, Taoyuan, Taiwan
5. Department of Post-Baccalaureate Medicine, College of Medicine, National Chung Hsing University, Taichung, Taiwan
6. Department of Hospitality Management, MingDao University, Changhua, Taiwan