Guo, Yusong
Tian, Lijun
Du, Xiqiao
Deng, Zhigang
Funding for this research was provided by:
the Health Department Research Foundation of Hebei Province (20181044)
Article History
Received: 1 July 2019
Accepted: 25 October 2019
First Online: 1 January 2020
Compliance with ethical standards
:
: Yusong Guo, Lijun Tian, Xiqiao Du, and Zhigang Deng declare that they have no conflict of interest.