1. Departments of Rehabilitation Medicine, General Hospital, College of Medicine, Eulji University, Seoul, Korea
2. Departments of Laboratory Medicine, General Hospital, College of Medicine, Eulji University, Seoul, Korea
3. Departments of Internal Medicine, General Hospital, College of Medicine, Eulji University, Seoul, Korea
4. Division of Nephrology, Eulji General Hospital, College of Medicine, Eulji University, Seoul, Korea
5. Department of Laboratory Medicine, Inje University College of Medicine, Busan, Korea
6. Department of Laboratory Medicine, University of Ulsan College of Medicine and Asan Medical Center, Seoul, Korea