Funding for this research was provided by:
National Natural Science Foundation of China (81871756)
High-Level Medical Talents Training Project of Changzhou (2016CZLJ004)
the Municipal Social Development Project of the Changzhou City, Jiangsu Province, China (CJ20180073)
outh Project of Changzhou Municipal Commission of Health and Family Planning (QN201718)
Received: 21 January 2019
Accepted: 25 April 2019
First Online: 8 May 2019
Ethics approval and consent to participate
: The present study was approved by the Clinical Ethics Committee of Second People’s Hospital of Changzhou of Nanjing Medical University (Changzhou, China).
: Not applicable
: The authors declare that they have no competing interests.
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