1. From the Department of Pathology, Asan Medical Center, University of Ulsan College of Medicine, Songpa-gu, Seoul, Republic of Korea (Yoo).
2. From the Department of Pathology, Ewha Womans University Mokdong Hospital, Ewha Womans University College of Medicine, Yangcheon-Gu, Seoul, Republic of Korea (Kim, Choi, Sung, S. Park).
3. From the Department of Pathology, Ewha Womans University Seoul Hospital, Ewha Womans University College of Medicine, Gangseo-gu, Seoul, Republic of Korea (H. S. Park, Cho).