Fang, Mingxing
Liu, Na
Yao, Xiaoguang
Xu, Tieling
Wang, Zhiyong
Funding for this research was provided by:
development of department in the third hospital of hebei medical universit
Article History
Received: 1 April 2019
Accepted: 16 December 2019
First Online: 15 January 2020
Competing interests
: The authors declare no competing interests.