Ning, Yujie
Wang, Xi
Guo, Xiong
Zhang, Pan
Qu, Pengfei
Zhang, Feng
Wang, Sen
Lei, Yanxia
Lammi, Mikko
Funding for this research was provided by:
National Natural Science Foundation of China (81472924)
Fundamental Research Funds for the Central Universities
Article History
Received: 5 July 2017
Accepted: 7 September 2017
First Online: 18 September 2017
Compliance with Ethical Standards
:
: The authors declare that they have no conflicts of interest.
: <b>Ethical Approval</b> All the subjects and guardians (who were responsible for children’s meals and help recall the food items that children consumed) were consent informed (orally if the subject and/or guardian was illiterate) about the questionnaire and sample collection. The study protocol was approved by the ethic committee of Xi’an Jiaotong University.