Shang, Li
Yang, Liren
Yang, Wenfang
Huang, Liyan
Qi, Cuifang
Yang, Zixuan
Fu, Zhuxuan
Chung, Mei Chun
Funding for this research was provided by:
The Social Development of Science and Technology of Shaanxi Province (2019SF-100)
The Bureau of Xi’an Science and Technology (201805098YX6SF32(1))
The Center for Maternal and Child Health, Chinese Center for Disease Control and Prevention (2015FYJ002)
Article History
Received: 22 October 2019
Accepted: 7 April 2020
First Online: 30 April 2020
Compliance with ethical standards
:
: The authors declare that they have no actual or potential conflict of interests.
: Not applicable.