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.
Quality of evidence among systematic reviews assessing medical cannabis efficacy, effectiveness, and safety outcomes in selected conditions. MS, multiple sclerosis; ALS, amyotrophic lateral sclerosis; PTSD, posttraumatic stress disorder; HIV, human immunodeficiency virus.
