Song, Xiaowen
Zeng, Chaofan
Wang, Mingze
Wang, Wen
Lin, Fa
He, Qiheng
Cao, Yong
Wang, Shuo
Zhao, Jizong http://orcid.org/0000-0001-7304-0255
Article History
Received: 1 August 2019
Revised: 13 November 2019
Accepted: 21 November 2019
First Online: 17 December 2019
Compliance with ethical standards
:
: The authors declare that they have no conflicts of interest.
: This study was approved by the Institutional Review Board of Beijing Tiantan Hospital.
: Patient informed consents were waived due to the retrospective nature of the study.