1. School of Medicine Chung Shan Medical University Taichung Taiwan
2. Department of Orthopedics Cishan Hospital, Ministry of Health and Welfare Kaohsiung Taiwan
3. Institute of Medical Science and Technology National Sun Yat‐sen University Kaohsiung Taiwan
4. Department of Senior Services Industry Management Minghsin University of Science and Technology Hsinchu Taiwan
5. Department of Recreation and Sport Management Shu‐Te University Kaohsiung Taiwan
6. Division of Gastroenterology and Hepatology Changhua Christian Hospital Changhua Taiwan
7. Institute of Medicine Chung Shan Medical University Taichung Taiwan