1. Department of Dermatology Kansai Medical University 2‐5‐1 Shinmachi Hirakata Osaka 573‐1010 Japan
2. Department of Dermatology Faculty of Medicine Institute of Medical Pharmaceutical and Health Science Kanazawa University Kanazawa Japan
3. Department of Dermatology Faculty of Medicine University of Tsukuba Tsukuba Japan
4. Department of Dermatology Gunma University Graduate School of Medicine Maebashi Japan
5. Department of Dermatology Osaka University Graduate School of Medicine Suita Japan
6. Department of Dermatology Faculty of Medicine Kinki University Osaka Japan
7. Department of Dermatology Toyama Red Cross Hospital Toyama Japan