Wang, Yu
Li, Chunde
Liu, Long
Qi, Longtao
Article History
Received: 6 April 2020
Accepted: 11 January 2021
First Online: 22 January 2021
Ethics approval and consent to participate
: The study was approved by the Medical Ethics Committee of Peking University First Hospital (the ethics approval number provided by the board was 20190309052). All participants signed an informed consent for participation in this study.
: Written informed consents for publication of topless photographs and whole spine radiographs in the anatomic position were obtained from the patients.
: All authors declare they have no conflict of interest.