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Heart failure - Symptoms and causes - Mayo Clinic
What is Heart Failure? | American Heart Association
Congestive Heart Failure: Symptoms, Stages & Treatment
Heart Failure Signs and Symptoms | American Heart Association
Heart Failure - What Is Heart Failure? | NHLBI, NIH
Heart failure - Diagnosis and treatment - Mayo Clinic
Congestive Heart Failure: Causes, Symptoms, and Treatment …
Heart Failure | cdc.gov - Centers for Disease Control and Prevention
Heart Failure | Johns Hopkins Medicine
Acute Heart Failure: Types, Symptoms, Causes and Treatment