1. Department of Pathology, Kwandong University Cheil General Hospital & Women's Healthcare Center, Seoul, Korea.
2. Department of Pathology, Korea University Anam Hospital, Seoul, Korea.
3. Department of Pathology, Soonchunhyang University Hospital, Seoul, Korea.
4. Department of Pathology, Yeungnam University College of Medicine, Daegu, Korea.
5. Department of Pathology, Korea University Guro Hospital, Seoul, Korea.
6. Department of Pathology, Kosin University College of Medicine, Busan, Korea.
7. Department of Pathology, Dong-A University College of Medicine, Busan, Korea.
8. Department of Pathology, Catholic University, St. Mary's Hospital, Seoul, Korea.
9. Department of Pathology, Kyung Hee University Medical Center, Seoul, Korea.
10. Department of Pathology, Hanyang University Kuri Hospital, Guri, Korea.
11. Department of Pathology, Chonbuk National University College of Medicine, Jeonju, Korea.
12. Department of Pathology, Chungnam National University College of Medicine, Daejeon, Korea.
13. Department of Pathology, Sunghyunkwan University Kangbuk Samsung Medical Center, Seoul, Korea.
14. Department of Pathology, Hallym University, Gangnam Sacred Heart Hospital, Seoul, Korea.
15. Department of Pathology, Daegu Catholic University Medical Center, Daegu, Korea.
16. Department of Pathology, Wonkwang University College of Medicine, Iksan, Korea.
17. Department of Pathology, Inje University Busan Paik Hospital, Busan, Korea.
18. Department of Pathology, Ewha Womans University College of Medicine, Seoul, Korea.
19. Department of Pathology, Catholic University, Gangnam St. Mary's Hospital, Seoul, Korea.
20. Department of Pathology, National Police Hospital, Seoul, Korea.
21. Department of Pathology, Medical School Gil Medical Center, Incheon, Korea.
22. Department of Pathology, Chonnam National University Hwasun Hospital, Hwasun, Korea.
23. Department of Clinical Pathology, College of Health Science, Korea University, Seoul, Korea.