Hyun Ji Son1, Ha Yoon Mo1, Nam Jin Yoo1, Sug Hyung Lee2. 1. Department of Pathology, College of Medicine, The Catholic University of Korea, Seoul, 137-701, South Korea. 2. Department of Pathology, College of Medicine, The Catholic University of Korea, Seoul, 137-701, South Korea; Department of Cancer Research Institute, College of Medicine, The Catholic University of Korea, Seoul, 137-701, South Korea. Electronic address: suhulee@catholic.ac.kr.