["MEDICAL \/ Cardiology","Cardiovascular system;Diseases.","Cardiovascular system;Diseases;Popular works.","Heart;Diseases;Popular works.","CARDIOVASCULAR DISEASES","Cardiovascular system;Diseases.","Cardiovascular system;Diseases;Popular works.","GENERAL","General Adult","Heart;Diseases;Popular works.","MEDICAL \/ Cardiology","Medical","Non-Fiction","PUBLIC HEALTH & PREVENTIVE MEDICINE","United States"]