Ключевые слова: appointment, background, busy, cardiac, cardiologist, cardiology, care, check, checkup, clinic, clock, concept, consult, date, deadline, diagnose, diagnostic, disease, doctor, equipment, examination, health, healthcare, healthy, heart, heartbeat, hospital, illness, instrument, intern, job, late, lung, management, medical, medicine, overtime, patient, physician, profession, pulse, schedule, scheduling, specialist, stethoscope, time, tool, treatment, vaccination, watch,