Xie, Sungel
Xiao, Xin-Ru
Xiao, Shun-Wu
Xie, Ming-Xiang
Zhang, Jun-Ting
Wu, Zhen
Zhang, Li-Wei http://orcid.org/0000-0002-5100-2773
Article History
Received: 26 September 2019
Revised: 24 November 2019
Accepted: 20 December 2019
First Online: 2 January 2020
Compliance with ethical standards
:
: The authors declare that they have no conflicts of interest.
: The Beijing Tiantan Hospital Research Ethics Committee approved the study.
: Due to the retrospective nature of the report, informed consent was not required.