1. Department of Neurology, Chonbuk National University Medical School, Jeonju, Korea.
2. Department of Diagnostic Radiology, Chonbuk National University Medical School, Jeonju, Korea.
3. Department of Biochemistry, Chonbuk National University Medical School, Jeonju, Korea.
4. Department of Internal Medicine, Catholic Medical Center, Seoul, Korea.
5. Department of Laboratory Medicine, Chonbuk National University Medical School, Jeonju, Korea.