Ключевые слова: ache, acids, adult, angina, anxiety, arrest, asia, asthma, attack, breast, breathing, cardiac, cardiology, cardiovascular, chest, chest pain, discomfort, disease, emergency, female, girl, hand, health care, heart, heart pain, heartache, illness, illustration, injury, lady, medical, myocardial, one, pain, patient, people, pressure, reflux, risk, sick, sudden, suffering, symptom, tragic, trouble,