1. Department of Dermatology; Tokai University School of Medicine; Kanagawa Japan
2. Department of Medical Informatics; Tokai University School of Medicine; Kanagawa Japan
3. Department of Dermatology, School of Medicine; Hokkaido University; Hokkaido Japan
4. Department of Preventive Medicine; Nagoya University School of Medicine; Aichi Japan
5. Department of Epidemiology and Environmental Health; Juntendo University; Tokyo Japan
6. Department of Dermatology, School of Medicine; Juntendo University; Tokyo Japan