Mo, Bin
Li, Song-Feng http://orcid.org/0000-0003-4613-0997
Article History
Received: 1 November 2019
Accepted: 7 July 2020
First Online: 25 July 2020
Ethics approval and consent to participate
: The study was approved by the Ethical Committee of the Beijing Tongren Hospital. Due to the retrospective nature of this study, the inform consent from individual patient was waived by the Ethical Committee of the Beijing Tongren Hospital in this study.
: The personal information in all images and video are entirely unidentifiable; and there are no details on individuals reported within the manuscript.
: The authors declare that they have no competing interests.