Xu, Jie
Sun, Lijuan
Wang, Xianwen
Wang, Xiehong
Xing, Weisheng
Zhou, Pingmei
Li, Shujin http://orcid.org/0000-0001-8656-9000
Article History
Received: 1 August 2020
Accepted: 10 September 2020
First Online: 15 September 2020
Compliance with ethical standards
: All procedures performed in the study involving human participants were in accordance with the ethical standards of the Medical Ethics Committee of Hebei Medical University (No. 2018011) and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: The authors declare that they have no conflict of interest.