Text and Data Mining valid from 2019-07-31
Received: 7 May 2019
Accepted: 22 July 2019
First Online: 31 July 2019
Ethics approval and consent to participate
: This study was reviewed and approved by the Review Board of the First Affiliated Hospital of Zhengzhou University. All patients gave their written and informed consent. The animal study protocol was also approved by the Committee on the Use of Live Animals in Teaching and Research, the First Affiliated Hospital of Zhengzhou University.
: All the listed authors have participated actively in the study, and have seen and approved the submitted manuscript.
: The authors declare that they have no competing interests.