Cai, Yingjie
Chen, Manshuang
Zhai, Weixia
Wang, Chunhui
Article History
Received: 20 October 2021
Accepted: 28 February 2022
First Online: 11 March 2022
Declarations
:
: This research analyzed de-identified information downloaded from the National Health and Nutrition Examination Survey public database. The National Center for Health Statistics Ethics Review Committee granted ethics approval. All methods were carried out in accordance with relevant guidelines and regulations (declaration of Helsinki). All individuals provided written informed consent before participating in the study.
: Not applicable.
: The authors declare that they have no competing interests.