Jae Hoon Lee1, Young-Jin Lee2, Jeong-Hwan Hwang3, Chang-Seop Lee3. 1. Department of Internal Medicine and Institute of Wonkwang Medical Science, Iksan, Korea. 2. Department of Laboratory Medicine, Wonkwang University College of Medicine, Iksan, Korea. 3. Department of Internal Medicine and Research Institute of Clinical Medicine, Chonbuk National University Hospital, Chonbuk National University Medical School, Jeonju, Korea.