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Authors
Zheng, Long-Yi
Xu, Xia
Wan, Ren-Hui
Xia, Sheng
Lu, Jin
Huang, Qin
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Funding
Funding for this research was provided by:
National Natural Science Foundation of China (81672831)
National Natural Science Foundation of China (81471038)
the special research grant for non-profit public service from the National Health and Family Planning Commission (201502011)
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Article History
Received: 4 May 2019
Accepted: 18 July 2019
First Online: 24 July 2019
Ethics approval and consent to participate
: The study was approved by the ethics committee of the Changhai Hospital Clinical Research Ethics Committee. Written informed consent was obtained before the data collection and analysis.
: Not applicable.
: The authors declare that they have no competing interests.
