Funding for this research was provided by:
Natural Science Foundation of Henan Province (U1804192)
Key Scientific Research Project of Colleges and Universities in Henan Province (19A320046, 20A320062)
Text and Data Mining valid from 2020-01-06
Received: 29 August 2019
Accepted: 26 December 2019
First Online: 6 January 2020
Ethics approval and consent to participate
: Informed consent was obtained from all patients and the protocol was approved by the Ethics Committee of the First Affiliated Hospital of Zhengzhou University.
: All authors agreed to publish.
: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as potential competing interests.