Ключевые слова: background, beat, blood, brown, cardiogram, cardiograms, cardiologist, cardiology, care, clipboard, closeup, color, concept, consultation, diagnosis, disease, doctor, examination, health, heart, heartbeat, illness, medic, medical, medicine, nobody, object, paper, patient, pressure, prevention, pulse, rhythm, service, sheet, sickness, stethoscope, tool, treatment,