Ключевые слова: background, blue, cardiac, cardiologist, cardiology, care, clean, closeup, device, diagnose, diagnosis, diagnostic, disease, doctor, emergency, equipment, exam, examination, health, healthcare, hear, heartbeat, hospital, ill, instrument, isolated, listen, lung, measurement, medical, medicine, metal, nurse, physician, profession, professional, pulse, quinsy, research, science, scientific, sound, sterile, stethoscope, student, table, test, tool, treatment, white, wood,