Ren, Longfei
Qi, Kuo
Zhang, Lei
Bai, Zhongtian
Ren, Chenghui
Xu, Xianyun
Zhang, Zeliang
Li, Xun
Funding for this research was provided by:
National Natural Science Foundation of China (31570509, 31270543)
Research funding of 1st hospital of Lanzhou university (ldyyyn2017-23)
Article History
Received: 1 November 2018
Accepted: 14 January 2019
First Online: 4 February 2019
Compliance with Ethical Standards
:
: The authors declare that they have no conflict of interest.