1. Department of Physical Medicine and Rehabilitation, Ajou University School of Medicine, Suwon Korea.
2. Rehabilitation Institute of Chicago, Chicago, IL, USA and The Seum Hospital, Jeonju, Korea.
3. Department of Physical Medicine and Rehabilitation, The Catholic University of Korea, Seoul, Korea.
4. Department of Physical Medicine and Rehabilitation, CHA University, Seongnam, Korea.
5. Department of Physical Medicine and Rehabilitation, Pusan National University School of Medicine, Busan, Korea.
6. Department of Physical Medicine and Rehabilitation, Kwangju Christian Hospital, Gwangju, Korea.
7. Department of Physical Medicine and Rehabilitation, Daegu Fatima Hospital, Daegu, Korea.
8. Department of Physical Medicine and Rehabilitation, Dongguk University College of Medicine, Goyang, Korea.
9. Department of Physical Medicine and Rehabilitation, Hanmaeum Hospital, Jeju, Korea.
10. Department of Physical Medicine and Rehabilitation, National Health Insurance Service Ilsan Hospital, Goyang, Korea.
11. Department of Physical Medicine and Rehabilitation, Inha University School of Medicine, Incheon, Korea.
12. Department of Physical Medicine and Rehabilitation, Sungkyunkwan University School of Medicine, Suwon, Korea.
13. Department of Physical Medicine and Rehabilitation, University of Ulsan College of Medicine, Seoul, Korea.