Zhao, Doudou
Guo, Leqian
Zhang, Ruo
Zhu, Qixia
Wang, Hongli
Liu, Rong
Yan, Hong
Dang, Shaonong
Funding for this research was provided by:
National Natural Science Foundation of China (81230016)
Birth Defect Control and Prevention Project of Shaanxi Commission of Health and Family Planning (sxwsjswzfcght2016-013)
Article History
Received: 4 April 2019
Accepted: 14 September 2020
First Online: 19 September 2020
Compliance with ethical standards
:
: The authors declare that they have no competing interests.
: The Human Research Ethics Committee of the Xi’an Jiaotong University Health Science Center approved the study (No. 20120008). All subjects involved in the study had signed informed written consent before acceptance into the investigation.
: Not applicable.