Funding for this research was provided by:
National Natural Science Foundation of China (81673261)
Received: 31 March 2019
Accepted: 1 October 2019
First Online: 27 November 2019
Ethics approval and consent to participate
: Written informed consent was obtained from the patients.Ethics approval is approved by the Institutional Review Board of China Medical University.
: The authors declare that they have no competing interests.