1. Department of Rehabilitation Medicine; Gyeongsang National University College of Medicine; Gyeongsangnam-do South Korea
2. Department of Brain and Cognitive Engineering; Korea University; Anam-dong, Seongbuk-gu Seoul 136-713 South Korea
3. Department of Radiology; Seoul National University College of Medicine; Seoul South Korea
4. Department of Rehabilitation Medicine; Seoul National University College of Medicine; Daehak-ro, Jongno-gu Seoul 110-744 South Korea