Ключевые слова: background, black, cardiac, cardiologist, cardiology, care, checkup, clinical, concept, cure, dark, diagnose, diagnosis, diagnostic, disease, doctor, empty, equipment, examination, health, health care, healthcare, healthy, heart, heartbeat, help, hospital, illness, instrument, measurement, medic, medical, medication, medicine, nurses, object, physician, professional, protection, pulse, red, risk, security, service, stethoscopes, text, therapy, tool, treatment, work,