Funding for this research was provided by:
Natural Science Foundation of Fujian Province (NO.2017J01238)
Fujian Provincial Department of Science and Technology (NO.2013YZ0002-1)
Text and Data Mining valid from 2018-06-04
Received: 27 March 2018
Accepted: 13 May 2018
First Online: 4 June 2018
Ethics approval and consent to participate
: The study was approved by the ethics review boards of Nanfang Hospital (No.NFEC-2016-093) and Fujian Provincial Maternity and Children’s Hospital (No. 12). Written informed consent for participation was received for all patients.
: The authors declare that they have no competing interests.
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