1. Department of Physical Medicine and Rehabilitation, Center for Clinical Research, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
2. Department of Rehabilitation Medicine, Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, Korea.
3. Department of Physical Medicine and Rehabilitation, Samsung Changwon Hospital, Changwon, Korea.
4. Department of Motor and Cognitive Function Rehabilitation, National Rehabilitation Research Institute, Seoul, Korea.