Sun, Yifu
Wang, Lishan
Li, Changkuan
Gu, Rui
Zang, Weidong
Song, Wei
Xia, Peng
Funding for this research was provided by:
The Special fund for medical service of Jilin finance department (SCZSY201507)
The Program of Educational Department of Jilin Province (440020031123)
Article History
Received: 27 May 2019
Accepted: 6 March 2020
First Online: 6 May 2020
Ethics approval and consent to participate
: Not applicable.
: Not applicable.
: The authors declare that they have no competing interests.