1. Department of Neurology, Dongtan Sacred Heart Hospital, Hallym University College of Medicine, Hwaseong, Korea.
2. Department of Neurology, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Anyang, Korea.
3. Department of Neurology, Inje University Ilsan Paik Hospital, Inje University College of Medicine, Goyang, Korea.
4. Department of Neurology, Gyeongsang National University College of Medicine and Gyeonsang National University Hospital, Jinju, Korea.
5. Department of Neurology, Chuncheon Sacred Heart Hospital, Hallym University College of Medicine, Chuncheon, Korea.
6. Department of Neurology, Pusan National University Hospital, Pusan National University School of Medicine, Busan, Korea.