1. Department of Internal Medicine, Haeundae Paik Hospital, Inje University College of Medicine, Busan, Korea.
2. Department of Neurology, Haeundae Paik Hospital, Inje University College of Medicine, Busan, Korea.
3. Department of Radiology, Haeundae Paik Hospital, Inje University College of Medicine, Busan, Korea.
4. Department of Biomedical Engineering, Inje University, Gimhae, Korea.