Article History
Received: 16 March 2022
Accepted: 17 May 2022
First Online: 25 June 2022
Declarations
:
: The China Health and Nutrition Survey was approved by the institutional review boards of the University of North Carolina at Chapel Hill, the Ministry of Health of the People's Republic of China, and the National Institute for Nutrition and Health, Chinese Center for Disease Control and Prevention. Informed consent to participate in the study have been obtained from participants (or their parent or legal guardian in the case of children under 16).
: No financial or non-financial benefits have been received or will be received from any party related directly or indirectly to the subject of this article. The authors have no conflict of interest to declare.