Ключевые слова: background, blood, cardiac, cardiogram, care, clinic, computer, cpr, display, doctor, ecg, emergency, equipment, focus, green, health, heart, heartbeat, hospital, hygiene, illness, indoors, intensive, life, mask, medical, medicine, monitor, monitoring, nurse, occupation, operating, operation, patient, people, procedure, professional, protective, pulse, room, science, services, surgeon, surgery, surgical, surveillance, technology, trace, unit, urgency,