Funding for this research was provided by:
National Key Research and Development Program of China (2018YFC1002203)
Key Science Research Projects in Colleges and Universities of Henan Province (19A310025)
Received: 17 January 2019
Accepted: 5 August 2019
First Online: 14 August 2019
Ethics approval and consent to participate
: The project passed the review of the ethics committee by the Ethics Committee for Scientific Research and Clinical Trials of the First Affiliated Hospital of Zhengzhou University. All patients and their family members signed informed consent.
: Not applicable.
: The authors declare that they have no competing interests.