1. Department of Neurology, Chonbuk National University Medical School, Jeonju, Korea.
2. Department of Anesthesiology and Pain Medicine, Chonbuk National University Medical School, Jeonju, Korea.
3. Department of Laboratory Medicine, Chonbuk National University Medical School, Jeonju, Korea.
4. Department of Neurology, Yonsei University College of Medicine, Seoul, Korea