Ключевые слова: background, cardiac, cardio, cardiogram, cardiologist, cardiology, check, checkup, clinic, clinical, closeup, condition, cure, device, diagnose, diagnosis, diagnostic, disease, equipment, exam, examination, examine, frequency, health, healthcare, healthy, hear, heart, heartbeat, hospital, illness, instrument, isolated, measurement, medic, medical, medicine, metal, pressure, pulse, red, rubber, sick, sound, stethescope, stethoscope, stetoscope, treatment, white,