1. College of Nursing, Hanyang University·Hanyang Cell Therapy Center, Hanyang University Seoul Hospital, Seoul, Korea.
2. Department of Nursing, Far East University, Eumseong, Korea.
3. Department of Neurology, College of Medicine, Hanyang University·Hanyang Cell Therapy Center, Hanyang University Seoul Hospital, Seoul, Korea.
4. Department of Neurology, Busan Paik Hospital, Inje University College of Medicine, Busan, Korea.
5. College of Nursing, Hanyang University, Seoul, Korea.