1 Department of Plastic and Reconstructive Surgery, Kanagawa Children's Medical Center, Mutsukawa 2-138-4, Minami-ku, Yokohama 232-8555, Kanagawa, Japan. Electronic address: skobayashi@kcmc.jp.
2 Department of Plastic and Reconstructive Surgery, Kanagawa Children's Medical Center, Mutsukawa 2-138-4, Minami-ku, Yokohama 232-8555, Kanagawa, Japan; Fukawa Orthodontic Office, Japan.
3 Department of Plastic and Reconstructive Surgery, Yokohama City University Hospital, Japan.