Li, Xuanhao
He, Fei
Huang, Cong
Zhang, Liangshuo
Liu, Qiang http://orcid.org/0000-0003-1387-4471
Song, Jian http://orcid.org/0000-0003-1512-8157
Article History
Received: 28 September 2020
Accepted: 8 January 2021
First Online: 21 January 2021
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: This retrospective study was approved by Beijing Friendship hospital Medical Ethics Committee.