Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Image Source: Zheng et al., 2019 [6]. Use Permitted For non-commercial purposes: Creative Commons Attribution – NonCommercial – NoDerivs (CC BY-NC-ND 4.0)
