Ключевые слова: aid, background, beat, blood, cardio, cardiographs, cardiologist, cardiologists, cardiology, care, clinic, clinical, concept, copy space, crochet, cure, diagnosis, diagnostic, disease, doctor, equipment, exam, examination, family, good, health, healthy, hear, heart, heart health, heartbeat, help, hospital, human, humanity, illness, life, listening, medical, medicine, pressure, red, rhythm, sickness, sign, stethoscope, treatment, white, world health day, world heart day,