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Heart disease - Symptoms and causes - Mayo Clinic
Heart Disease | cdc.gov
Heart Disease: Types, Causes, and Symptoms - WebMD
Heart Disease Facts | cdc.gov
What is Cardiovascular Disease? | American Heart Association
Heart Disease: Symptoms & Causes - Cleveland Clinic
Heart disease - Diagnosis and treatment - Mayo Clinic
About Heart Disease | cdc.gov
Coronary artery disease - Symptoms and causes - Mayo Clinic
Cardiovascular diseases (CVDs) - World Health Organization (WHO)