Funding for this research was provided by:
the major project of Fujian Provincial Department of Science And Technology (2014YZ0003-1)
Received: 21 March 2018
Accepted: 19 September 2018
First Online: 6 December 2018
Ethics approval and consent to participate
: The study was approved by the ethics committee of the First Affiliated Hospital of Fujian Medical University. (059).
: We have obtained consent from all patients or their legal guardians.
: The authors declare that they have no competing interests.