T Watanabe1, S Hara2, J Muto3, D Watanabe3, M Akiyama4. 1. Department of Dermatology, Toyota Memorial Hospital, Toyota, Aichi, Japan. 2. Department of Pediatrics, Toyota Memorial Hospital, Toyota, Aichi, Japan. 3. Department of Dermatology, Aichi Medical University, Nagakute, Aichi, Japan. 4. Department of Dermatology, Nagoya University, Nagoya, Aichi, Japan.