- USA.gov www.usa.gov/health
- U.S. Department of Health and Human Services www.hhs.gov
- WebMD www.webmd.com
- World Health Organization www.who.int
- FamiliesUSA www.familiesusa.org
- FamilyDoctor.org www.familydoctor.org
- Healthline www.healthline.com
- HealthyChildren.org www.healthychildren.org
