Qu, Peng-fei https://orcid.org/0000-0002-2644-5812
Zhang, Ya
Li, Jia-mei
Zhang, Ruo
Yang, Jiao-mei
Lei, Fang-liang
Li, Shan-shan
Liu, Dan-meng
Dang, Shao-nong
Yan, Hong
Funding for this research was provided by:
National Natural Science Foundation of China (81230016)
the Project of Birth Defect Control and Prevention in Shaanxi (Sxwsjswzfcght2016-013)
the Chinese Ministry of Health (MOH) and the United Nations Children’s Fund(UNICEF) (YH001)
Article History
Received: 8 November 2016
Accepted: 18 December 2017
First Online: 19 January 2018