1. Department of Diagnostic Pathology Shizuoka Cancer Center Hospital Sunto Japan
2. Department of Pathology Tokyo Metropolitan Cancer and Infectious Disease Center Komagome Hospital Tokyo Japan
3. Department of Diagnostic Pathology and Cytology Osaka International Cancer Institute Osaka Japan
4. Department of Dermato‐Oncology/Dermatology National Hospital Organization Kagoshima Medical Center Kagoshima Japan
5. Department of Pathology Itabashi Central Clinical Laboratory Tokyo Japan
6. Department of Dermatology Shinshu University School of Medicine Matsumoto Japan