Xu, Ying-Jia
Wang, Zhang-Sheng
Yang, Chen-Xi
Di, Ruo-Min
Qiao, Qi
Li, Xiu-Mei
Gu, Jia-Ning
Guo, Xiao-Juan
Yang, Yi-Qing
Funding for this research was provided by:
National Natural Science Foundation of China (81470372)
Shanghai Municipal Population and Family Planning Commission (M20170348)
the Fifth People′s Hospital of Shanghai (2018WYZD05)
Article History
Received: 2 September 2018
Accepted: 3 December 2018
First Online: 10 December 2018
Compliance with Ethical Standards
: The study was carried out in conformity with the ethical standards established in the 1964 Declaration of Helsinki and its later amendments and was approved by the Medical Ethics Committee of the Fifth People′s Hospital of Shanghai, Fudan University, China. All study participants provided their informed consent prior to the study.
: The authors declare that they have no conflict of interest.
: All procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1975, as revised in 2000. No animal studies were carried out by the authors for this article.
: Informed consent was obtained from all study subjects.