Ключевые слова: ache, aged, angina, arm, arrest, asian, attack, background, blue, breathing, business, cardiac, cardiology, cardiovascular, chest, chronic, condition, coronary, cough, disease, failure, fear, health, healthcare, heart, heartache, heartburn, holding, human, illness, isolated, male, man, medicine, men, middle, myocardial, pain, people, person, pressure, problem, severe, sick, stroke, suffer, system, thorax, white, young,