1. Department of Diagnostic Pathology, Sungkyunkwan University School of Medicine, Samsung Medical Center, 50 Ilwon-dong, Kangnam-gu, 135-710, Seoul, Korea
2. Department of Radiology, Sungkyunkwan University School of Medicine, Samsung Medical Center, Seoul, Korea
3. Department of Hematology-Oncology, Sungkyunkwan University School of Medicine, Samsung Medical Center, Seoul, Korea
4. Department of Pathology, Kosin University, Pusan, Korea