Risa Ohsawa1, Hozumi Sano2, Mitsunori Ikeda3, Shigetoshi Sano4. 1. Department of Dermatology, Hata Kenmin Hospital, Kochi, Japan. 2. Department of Dermatology, Kochi Medical School, Kochi University, Kochi, Japan. 3. Faculty of Nursing and Graduate School of Nursing, and Wellness and Longevity Center, University of Kochi, Kochi, Japan. 4. Department of Dermatology, Kochi Medical School, Kochi University, Kochi, Japan. Electronic address: sano.derma@kochi-u.ac.jp.