- Health Care Without Harmwww.noharm.org
- Mayo Clinic Health System www.mayoclinichealthsystem.org
- National Institutes of Health (NIH)www.ncbi.nlm.nih.gov
- Centers for Disease Control and Preventionwww.cdc.gov
- Substance Abuse and Mental Health Services Administrationhwww.samhsa.gov
- American Heart Associationwww.heart.org
