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Authors
Liu, Yukai
Gong, Pengyu
Sun, Huanhuan
Zhang, Shuting
Zhou, Junshan https://orcid.org/0000-0001-5230-1954
Zhang, Yingdong
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Funding
Funding for this research was provided by:
Nanjing Commission of Health and Family Planning (ZDX16002)
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Article History
Received: 7 August 2018
Accepted: 31 December 2018
First Online: 5 January 2019
Compliance with ethical standards
:
: The authors declare that they have no conflicts of interest.
: All procedures performed in the study involving human participants were in accordance with the ethical standards of the institutional and national research committee and adhered to the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
