Ключевые слова: 3034 years, 3539 years, above 30, authority, beijing, blood pressure gauge, care, china, chinese ethnicity, close up, closeup, color image, doctor, doctors office, ear exam, examining, expertise, glasses, healthcare and medicine, healthcare worker, holding, horizontal, human body part, human ear, human hand, human head, indoor, measuring, medical equipment, medical exam, medical instrument, mid adult men, mid adult women, otoscope, patient, photography, professional occupation, responsibility, selective focus, touching, two people, unrecognizable person, working,