Ключевые слова: accuracy, blood, blue, cardiac, cardio, cardiology, cardiovascular, check, checkup, clean, clinical, device, diagnosis, diagnostic, disease, doctor, equipment, examination, examine, frequency, gauge, health, health care, hear, hearing, heart, heartbeat, hospital, illness, instrument, isolated, listening, measurement, medic, medical, medicine, metal, pressure, pulse, rate, rubber, sick, sound, stethoscope, stetoscope, surgeon, test, treatment, wellbeing, wellness, white,