1. Department of Pathology, Ajou University School of Medicine, Suwon, Korea.
2. Department of Pathology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
3. Department of Pathology, Inje University Seoul Paik Hospital, Seoul, Korea.
4. Department of Pathology, Konkuk University School of Medicine, Seoul, Korea.
5. Department of Pathology, Veterans Health Service Medical Center, Seoul, Korea.
6. Department of Pathology, Korea University College of Medicine, Seoul, Korea.
7. Department of Pathology, Inje University Sanggye Paik Hospital, Seoul, Korea.
8. Department of Pathology, Hallym University Sacred Heart Hospital, Anyang, Korea.
9. Department of Pathology, Hanyang University College of Medicine, Seoul, Korea.
10. Department of Pathology, Asan Medical Center, Seoul, Korea.
11. Department of Pathology, Korea University Guro Hospital, Seoul, Korea.
12. Department of Pathology, Yonsei University College of Medicine, Seoul, Korea.
13. Department of Pathology, Hanyang University Guri Hospital, Guri, Korea.
14. Department of Pathology, Gyeongsang National University School of Medicine, Jinju, Korea.
15. Department of Pathology, Kyung Hee University School of Medicine, Seoul, Korea.
16. Department of Pathology, Dankook University College of Medicine, Cheonan, Korea.
17. Department of Pathology, Eulji University Hospital, Daejeon, Korea.
18. Department of Pathology, Eulji General Hospital, Seoul, Korea.
19. Department of Pathology, Seoul National University, Seoul, Korea.
20. Department of Pathology, Ulsan University College of Medicine, Ulsan, Korea.
21. Department of Pathology, Chonnam National University Medical School, Gwangju, Korea.