Funding for this research was provided by:
Natural Science Foundation of Jilin Province (20190201047JC)
Text and Data Mining valid from 2019-04-16
Received: 1 February 2019
Accepted: 3 April 2019
First Online: 16 April 2019
Ethics approval and consent to participate
: The protocol was approved by the Ethics Committee of The Second Hospital of Jilin University on March 2017.
: Not applicable.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.