Wang, Jianfeng
Shen, Haiyang
Liu, Tao
Li, Qian
Lyu, Zhaoyang
Yu, Youtao
Article History
Received: 12 November 2020
Accepted: 7 March 2021
First Online: 26 March 2021
Declaration
:
: The authors declare that they have no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Informed consent was waived because this was a retrospective study.