1. Department of Physical Medicine and Rehabilitation, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Anyang, Republic of Korea.
2. Institute of Life and Death Studies, Hallym University, Chuncheon, Republic of Korea.
3. Department of Physical Medicine and Rehabilitation, Shiny Sky Rehabilitation Hospital, Anyang, Republic of Korea.
4. Department of General Surgery, Avens Rehabilitation Hospital, Anyang, Republic of Korea.
5. Department of Physical Medicine and Rehabilitation, Green Rehabilitation Hospital, Anyang, Republic of Korea.