1. Department of Internal Medicine, Eulji University School of Medicine, Korea
2. Department of Internal Medicine, Ewha University School of Medicine, Seoul, Korea
3. Department of Internal Medicine, Hanyang University School of Medicine, Seoul, Korea
4. Department of Internal Medicine, Yeungnam University School of Medicine, Daegu, Department of Internal Medicine, Sungkyunkwan University School of Medicine, Seoul, Korea
5. Department of Internal Medicine, Sungkyunkwan University School of Medicine, Seoul, Korea
6. Department of Internal Medicine, Yonsei University School of Medicine, Seoul, Korea
7. Department of Biochemistry, Eulji University School of Medicine, Korea
8. Department of Pathology, Eulji University School of Medicine, Korea
9. Department of Pathology, Ewha Womans University School of Medicine, Seoul, Korea