1. Department of Pathology; Seoul National University Bundang Hospital; Seongnam Korea
2. Department of Pathology; College of Medicine; Seoul National University; Seoul Korea
3. Department of Pathology; Seoul National University Hospital; Seoul Korea
4. Department of Pathology; Asan Medical Centre; Seoul Korea
5. Department of Pathology; Inha University Hospital; Incheon Korea
6. Department of Pathology; Seoul National University Boramae Hospital; Seoul Korea
7. Department of Pathology; Seoul St Mary's Hospital; The Catholic University of Korea; Seoul Korea