Ключевые слова: art, background, beat, cardiac, cardiogram, cardiograph, cardiologist, cardiology, curve, decor, design, diagnosis, electrocardiogram, fitness, graph, graphic, health, healthy, heart, heartbeat, holiday, hospital, icon, illness, illustration, isolated, life, line, love, medicine, observation, pulse, rhythm, romance, romantic, shape, sign, silhouette, sport, symbol, test, valentine, vitality, wave, wedding,