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.
PRISMA flowchart (PRISMA 2020 flow diagram for new systematic reviews which included searches of databases and registers. Source: Page MJ, McKenzie JE, Bossuyt PM, BoutronI, Hoffmann TC, Mulrow CD, et al. The PRISMA 2020 statement: an updated guideline for reporting systematic reviews. BMJ 2021;372:n71.doi:10.1136/bmj.n71).
