Xu, Chenyu
Liu, Jingli
Liu, Lanhua
Bi, Yongchun
Xu, Biyun
Chen, Jie
Xu, Biao
Chen, Tingmei
Hu, Yali
Zhou, Yi-Hua http://orcid.org/0000-0001-8880-0392
Funding for this research was provided by:
The Jiangsu Provincial Department of Health (H201537)
the Jiangsu Provincial Department of Health (YXZXB2016004)
the National Natural Science Foundation of China (81672002)
the Science and Technology Department of Jiangsu Province (BK20161105)
Article History
Received: 14 March 2018
Accepted: 2 July 2018
First Online: 6 July 2018
Ethics approval and consent to participate
: The study, including the informed consent form, was approved by the institutional ethics review committee of Zhenjiang Fourth People’s Hospital, Taixing People’s Hospital, and Nanjing Drum Tower Hospital, respectively, and was performed in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki and its later amendments. Written informed consent was obtained from each participant woman.
: Not applicable.
: The authors declare that they have no competing interests.
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