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.
Clinical guideline recommendations in relation to evidence levels. (A) Relationship between references, guidelines, and recommendations; (B) levels of evidence between guidelines and recommendations; (C) research design between guidelines and recommendations.
