Figure 4. Bias risk assessment of the studies included in the systematic review, according to the Cochrane Collaboration assessment tool( 12 ). Ribeirão Preto, SP, Brazil, 2019.
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.