Invited Discussion on: a Medical Tattooing Technique for Enhancing the Three-Dimensional Appearance of the Nipple-Areola Complex After Flap-Based Nipple Reconstruction by Yoshihiro Sowa, Ph.D., M.D. Takuya Kodama, M.D. Tomoko Hori, M.D. Toshiaki Numajiri, M.D., Ph.