1. Department of Skin Oncology/Dermatology Saitama Medical University International Medical Center Hidaka Japan
2. Department of Dermatology Asahikawa Medical University Asahikawa Japan
3. Department of Dermato-Oncology/Dermatology National Hospital Organization Kagoshima Medical Center Kagoshima Japan
4. Department of Dermatology Faculty of Medicine University of Tsukuba Tsukuba Japan
5. Skin Cancer Unit Department of Dermatology University Hospital Essen Essen Germany
6. Department of Respiratory Medicine Saitama Medical University International Medical Center Hidaka Japan
7. Community Health Science Center Saitama Medical University Iruma‐Gun Japan