Letter to the Editor on: "Safety and Efficacy of Poly-L-Lactic Acid Filler (Gana V vs. Sculptra) Injection for Correction of the Nasolabial Fold: A Double-Blind, Non-Inferiority, Randomized, Split-Face Controlled Trial"

致编辑的信，主题为：“聚左旋乳酸填充剂（Gana V 与 Sculptra）注射矫正鼻唇沟的安全性和有效性：一项双盲、非劣效性、随机、半脸对照试验”