Liu, Na
Feng, Song
Li, Huanhuan
Chen, Xiaoguang
Bai, Songting
Liu, Yufeng http://orcid.org/0000-0003-2653-3510
Article History
Received: 20 November 2019
Accepted: 6 January 2020
First Online: 18 January 2020
Compliance with ethical standards
:
: The authors declare that they have no competing interests.
: The present study was approved by the ethical review committee of the First Affiliated Hospital of Zhengzhou University.
: Not applicable.