Safety and efficacy of hyaluronic acid injectable filler in the treatment of nasolabial fold wrinkle: a randomized, double-blind, self-controlled clinical trial. - Li, Xing-Zhou; Chiang, Chi-Fu; Lin, Yung-Hsiang; Chen, Tim-Mo; Wang, Chih-Hsing; Tzeng, Yuan-Sheng; Cui, Hai-Yan (Journal of Dermatological Treatment, 2023)