1. Department of Orthopedic Surgery, Changhua Christian Hospital, Changhua 500209, Taiwan
2. Department of Golden-Ager Industry Management, Chaoyang University of Technology, Taichung 413310, Taiwan
3. College of Medicine, National Chung Hsing University, Taichung 402202, Taiwan
4. Department of Medical Information, Chung Shan Medical University, Taichung 402201, Taiwan
5. Informatics Office Technology, Chung Shan Medical University Hospital, Taichung 402201, Taiwan