Ключевые слова: background, blue, cardiac, cardiology, care, clinic, closeup, concept, device, diagnose, diagnostic, disease, doctor, drug, electronic, equipment, examination, flu, health, health care, healthcare, healthy, heart, heartbeat, hospital, illness, injection, instrument, isolated, laboratory, measurement, medical, medicament, medicine, metal, needle, nurse, object, pharmacy, phonendoscope, science, stethoscope, syringe, test, therapy, tool, treatment, vaccination, vaccine, white,