Ключевые слова: analyse, analysis, analyze, analyzing, cardio, cardiogram, cardiological, closeup, diagnose, diagnosis, disease, doctor, ecg, ekg, electrocardiogram, emergency services, equipment, examination, examine, graph, healthcare and medicine, heart, heartache, heartbeat, human heart, illness, listening to heartbeat, medical, medical exam, medical test, print, pulse trace, research, stethoscope, taking pulse,