1. School of Medicine, National Defense Medical Center , Taipei, Taiwan
2. Department of Medical Education and Research, Kaohsiung Veterans General Hospital , Kaohsiung, Taiwan
3. Department of Orthopedics, E-Da Hospital, I-Shou University , Kaohsiung, Taiwan
4. Department of Emergency Medicine, Kaohsiung Veterans General Hospital , Kaohsiung, Taiwan
5. Department of Recreation and Sports Management, Tajen University , Pingtung, Taiwan
6. Institute of Medicine, Chung Shan Medical University , Taichung, Taiwan