Ключевые слова: background, cardiac, cardiogram, cardiology, care, check, checkup, clinical, closeup, cure, device, diagnosis, diagnostic, disease, equipment, examine, health, healthcare, hear, heart, heartbeat, hospital, illness, insurance, listen, measurement, medical, medicine, metal, object, occupation, pressure, pulse, rate, research, rubber, science, sick, sound, stethoscope, surgeon, technology, test, therapy, tool, treatment, white,