Funding for this research was provided by:
National Natural Science Foundation of China (81603182, 81430087, 81673396, 81872831, 81473142,8)
Text and Data Mining valid from 2019-06-10
Received: 11 February 2019
Revised: 27 April 2019
Accepted: 2 May 2019
First Online: 10 June 2019
Compliance with ethical standards
: The clinical protocol was approved by the Ethics Committee of the First Hospital of Jilin University, China.
: The authors declare they have no conflict of interest.