1. Division of Surgical Pathology, University Hospital, Tokyo, Japan
2. Department of Diagnostic Pathology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
3. Department of Dermatology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
4. Department of Pathology, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital, Tokyo, Japan
5. Department of Pathology, Japanese Red Cross Medical Center, Tokyo, Japan
6. Department of Pathology, Japanese Red Cross Musashino Hospital, Tokyo, Japan
7. Department of Dermatology, Soka Municipal Hospital, Saitama, Japan
8. Department of Pathology, Tokyo Medical Center, Tokyo, Japan
9. Department of Pathology, Tokyo Metropolitan Bokutoh Hospital, Tokyo, Japan
10. Department of Pathology, Tokyo Metropolitan Hiroo Hospital, Tokyo, Japan
11. Department of Pathology, Tsuchiura Kyodo General Hospital, Ibaraki, Japan
12. Department of Pathology, Yokohama City Minato Red Cross Hospital, Kanagawa, Japan
13. Department of Oral Pathology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
14. Department of Human Pathology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan