Funding for this research was provided by:
National Natural Science Foundation of China (71804079)
China Ministry of Science & Technology (2008BAI58B05)
Science and Technology Innovation Project of the Chinese Academy of Agricultural Sciences (CAAS-ASTIP-2019-IFND)
Received: 8 April 2020
Accepted: 15 October 2020
First Online: 23 October 2020
Ethics approval and consent to participate
: This study was approved by the Ethical Review Committee of National Institute for Nutrition and Food Safety. The informed consent voluntarily was signed by participants’ parents or their guardians.
: Not applicable
: The authors declare no competing interests.