Document is current

Article History

Received: 29 November 2020

Accepted: 23 April 2021

First Online: 24 May 2021

Declarations

:

: All participants provided a written informed consent before participated in the survey collected by the Luohu Center for Disease Control and Prevention. All methods associated with the survey and data analyses in this study were in accordance with the relevant guidelines and regulations. This secondary data analysis was reviewed by the Oregon State University’s IRB and determined the study did not involve human subjects under the regulations set forth by the Department of Health and Human Services 45 CFR 46.

: Not applicable.

: The authors declare that they have no conflict of interest.