Plastic Surgery Hospital Chinese Academy of Medical Sciences No. 33 Badachu Road Beijing 100144 China;
Medical Informatics Center Peking University No. 38 Xueyuan Road Beijing 100191 China;
National Healthcare Data Center Affiliated to National Center for Medical Service Administration Beijing 100191 China;
Ninth Department of Plastic Surgery Plastic Surgery Hospital Chinese Academy of Medical Sciences No. 33 Badachu Road Beijing 100144 China;