1. Department of Plastic and Reconstructive Surgery, Saitama Medical School, Saitama, Japan.
2. Division of Plastic Surgery, Shizuoka Children's Hospital, Shizuoka, Japan.
3. Department of Plastic and Reconstructive Surgery, Fukushima Medical School, Fukushima, Japan.
4. Department of Plastic and Reconstructive Surgery, Graduate School of Medicine and Faculty of Medicine, University of Tokyo, Tokyo, Japan