Shuai Yue1, Mengran Ju2. 1. Department of Plastic and Reconstructive Surgery, Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 33 Ba-Da-Chu Road, Beijing, 100144, China. nanyiys@126.com. 2. Department of Plastic and Reconstructive Surgery, Chengdu Badachu Medical Aesthetics Hospital, Chengdu, 610000, China.