Ключевые слова: adult, back, caucasian, checkup, clinic, clinical, clinician, computer keyboard, concept, device, diagnostic, diagnostician, doctor, endoscope, endoscopic, endoscopist, endoscopy, esophagus, examination, experienced, gastroenterologist, gastrointestinal, gastroscopy, glove, health, healthcare, healthcare professional, healthcare worker, indoors, look, male, man, medic, medical, medical equipment, medical practice, medical service, medicine, modern technology, monitor screen, nitrile, one, perform, person, physician, procedure, specialist, type, ultrasound, view,