Ключевые слова: 4050 years, adult, businessman, caucasian ethnicity, computer software, data, doctor, email, facial expression, hand, hospital, illness, internet, laptop, male, mature adult, medical clinic, medical student, medicine, middle aged, mobile app, mobile phone, networking, nurse, one man only, patient, physical therapist, science, scrolling, searching, smart phone, support, surfing, surgeon, telephone, touching, treatment, typing, using laptop, using phone, web browser, web page, white,