1. Department of Laboratory Medicine, Chonbuk National University Medical School and Research Institute of Clinical Medicine, Chonbuk National University, Jeonju, Korea.
2. Department of Psychiatry, Chonbuk National University Medical School, Chonbuk National University, Jeonju, Korea.
3. Department of Internal Medicine, Seoul National University Medical School, Seoul National University, Jongno-gu, Seoul, Korea.