1. Department of Neurology; Gangneung Asan Hospital; University of Ulsan College of Medicine; Gangneung Korea
2. Department of Neurology; Haeundae Paik Hospital; Inje University; Busan Korea
3. Department of Neurology; Soonchunhyang University College of Medicine; Seoul Korea
4. Department of Neurology; Samsung Medical Center; Sungkyunkwan University School of Medicine; Seoul Korea
5. Department of Neurology; Chungnam National University Hospital; College of Medicine; Daejeon Korea
6. Department of Family Medicine; Asan Medical Center; University of Ulsan College of Medicine; Seoul Korea
7. Department of Neurology; Hanyang University College of Medicine; Seoul Korea