Figure 1.
Flow diagram and results of literature review.
Note: Flow diagram depicts the screening process, including the number and reason of inclusion and exclusion.
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.