1. Department of Skin Oncology/Dermatology; Saitama Medical University International Medical Center; Saitama Japan
2. Department of Pathology; Saitama Medical University International Medical Center; Saitama Japan
3. Department of Dermatology; Faculty of Medicine, University of Tsukuba; Tsukuba Japan
4. Department of Dermatology; Mito Kyodo General Hospital; Mito Japan