1. Department of Medical Education and Research, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan
2. Department of Emergency Medicine, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan
3. Department of Orthopedics, E-Da Hospital, I-Shou University, Kaohsiung, Taiwan
4. School of Medicine, College of Medicine, I-Shou University, Kaohsiung, Taiwan
5. Department of Psychiatry, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan
6. Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan
7. Department of Administration, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan
8. Department of Neurosurgery, China Medical University Hospital, Taichung, Taiwan