1 Department of cleft lip and palate treatment, Plastic Surgery Hospital (Institute), Peking Union Medical College, Chinese Academy of Medical Sciences, No. 33 Ba-Da-Chu Road, Shi-Jing-Shan District, Beijing, 100144, China.
2 Department of Cicatrix Minimally Invasive Treatment Center, Plastic Surgery Hospital (Institute), Peking Union Medical College, Chinese Academy of Medical Sciences, No. 33 Ba-Da-Chu Road, Shi-Jing-Shan District, Beijing, 100144, China. hujintian@vip.163.com.