Ключевые слова: background, cardiac, cardiology, care, chart, checkup, clean, clinical, closeup, device, diagnosis, diagnostic, disease, doctor, equipment, examination, health, healthcare, healthy, hear, heart, heartbeat, hospital, illness, instrument, listen, measurement, medical, medicine, metal, nobody, nurse, object, patient, pulse, rate, science, sick, silver, sound, stethoscope, test, tool, treatment, wellness, white, work,