Ключевые слова: 2020, background, beat, blood, cardiologist, cardiology, care, color, composition, concept, consultation, diagnosis, disease, doctor, examination, figure, flat, health, heart, heartbeat, illness, lay, medic, medical, medicine, new, nobody, number, object, patient, pressure, prevention, pulse, rhythm, service, sickness, stethoscope, table, top, treatment, view, white, wooden, year,