Ключевые слова: background, blue, cardiac, cardiologist, cardiology, care, clinic, clinical, concept, device, diagnose, diagnosis, diagnostic, disease, doctor, emergency, equipment, exam, examination, examining, finance, financial, health, health care, healthy, heart, heartbeat, hospital, illness, instrument, insurance, isolated, listening, medical, medicare, medicine, pressure, professional, pulse, red, science, stethoscope, tool, treatment,