1. Department of Neurology, Busan Paik Hospital, Inje University College of Medicine, Busan, Korea.
2. Department of Dermatology, College of Medicine, Hanyang University, Seoul, Korea.
3. Department of Neurology, College of Medicine, Hanyang University, Seoul, Korea.
4. Department of Pathology, College of Medicine, Hanyang University, Seoul, Korea.
5. Department of Laboratory Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea.
6. Department of Laboratory Medicine and Genetics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.