1. School of Public Health, National Defense Medical Center, Taipei, Taiwan, R.O.C.
2. Graduate Institute of Life Sciences, National Defense Medical Center, Taipei, Taiwan, R.O.C.
3. Graduate Institute of Aerospace and Undersea Medicine, National Defense Medical Center, Taipei, Taiwan, R.O.C.
4. Department of Orthopedics, Tri-Service General Hospital and National Defense Medical Center, Taipei, Taiwan, R.O.C.