1. Yonsei University, Department of Biomedical Engineering, 1 Yonseidae-gil, Wonju, Gangwon-do 220-710, Republic of Korea
2. Catholic University of Korea, Department of Internal Medicine, Research Institute of Immunobiology, 505 Banpo-dong, Seocho-gu, Seoul 137-701 Republic of Korea
3. Yonsei University, Department of Radiological Science, 1 Yonseidae-gil, Wonju, Gangwon-do 220-710, Republic of Korea
4. Catholic University of Korea, Department of Internal Medicine, Research Institute of Immunobiology, 505 Banpo-dong, Seocho-gu, Seoul 137-701 Republic of KoreadCatholic University of Korea, Seoul St. Mary’s Hospital, Department of Internal Medicine, Divisi