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Heart Disease: Types, Causes, and Symptoms - WebMD
The 12 most common heart and cardiovascular conditions • HRI
Heart disease - Symptoms and causes - Mayo Clinic
Heart Disease: Symptoms & Causes - Cleveland Clinic
About Heart Disease | Heart Disease | CDC
Cardiovascular (Heart) Diseases: Types and Treatments - WebMD
What is Cardiovascular Disease? | American Heart Association
Heart Disease | Heart Disease | CDC - Centers for Disease ...