- American Academy of Family Physicians
- American Diabetes Association
- American Heart Association
- American Heart Association - Hearthub
- Centers for Disease Control and Prevention - Travelers' Health
- CDC Fact Sheet: Test for Hepatitis C
- Fasting Blood Tests & Coffee
- Immunization Information
- Sarah Pierce
- Super Doctors
- Texas Medical Association
- USPSTF- U.S. Preventive Services Task Force