The Second Department, Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China

This article does not contain any studies with animals performed by any of the authors. All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.

The images presented in the study have been obtained through patient informed consent and authorization.

The authors declare no conflicts of interest.

Address correspondence and reprint requests to Yang-Qun Li, MD, The Second Department, Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.No.33 Ba-Da-Chu Road,Shi-Jing-Shan District, Beijing 1001424, China; E-mail: [email protected], [email protected]

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