Song, Qiying
Yang, Yuning
Liu, Xiaoli
Yang, Chenlu
Huang, Xiaona
Zhou, Hong
Wang, Yan
Funding for this research was provided by:
UNICEF China (“Health, Nutrition and WASH” [NO. 501])
Article History
First Online: 30 April 2020
Compliance with Ethical Standards
:
: The authors declare that they have no conflict of interest.
: This study was conducted according to the guidelines laid down in the Declaration of Helsinki and approved by the Ethical Committee of Peking University Health Science Centre.
: Written informed consent was provided by all caregivers of the children prior to their inclusion in the study.