Figure 1.
PRISMA study flow diagram demonstrating the number of studies included at each stage of data extraction. Adapted from the PRISMA 2020 flow diagram [28].
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.