Funding for this research was provided by:
key Clinical Specialty Discipline Construction Program of Fujian,P.RC. (-)
Text and Data Mining valid from 2018-08-03
Received: 3 April 2018
Accepted: 8 June 2018
First Online: 3 August 2018
Ethics approval and consent to participate
: Ethical approval for this study was obtained from the first affiliated hospital of Fujian medical university ethics committee.
: Not applicable.
: The authors declare that they have no competing interests.