Ключевые слова: ache, adult, afraid, angina, asian, attack, bending, breathing, business, businessman, cardiac, cardiology, caucasian, chest, condition, cough, disease, dizziness, emphysema, fear, guy, health, heart, heart attack, ill, illness, impaired, indigestion, infection, lung, male, man, mature, medical, men, pain, painful, palpitation, people, person, problems, professional, sick, sickness, stress, sudden, tightness, ulcer, unhealthy, worried,