Ключевые слова: background, book, cardiac, cardiology, care, career, checkup, clinic, closeup, cure, development, device, diagnostic, disease, doctor, education, equipment, examination, heal, health, healthcare, healthy, hear, heart, heartbeat, hospital, ill, illness, job, life, measurement, med, medic, medical, medicine, metal, modern, old, patients, pressure, pulse, recover, science, sick, stethoscope, takecare, test, tool, treatment, white,