Hojung Lee1, Hyekyung Lee2, Yong Kyun Cho3. 1. Department of Pathology, Nowon Eulji Medical Center, Eulji University, 280-1 Hagye 1-dong, Nowon-gu, Seoul, 139-711, Korea. 2. Department of Pathology, Daejeon Eulji Medical Center, Eulji University, 95 Dunsanseo-ro, Seo-gu, Daejeon, 35233, Korea. 3. Department of Internal Medicine, Division of Infectious Diseases, Gachon University Gil Medical Center, 1198 Guwol-dong, Namdong-gu, Incheon, 405-760, Korea. karmacho@gmail.com.