Effects of structuring patients' expectations on their reactions to threatening events.
D004644:Emotions; D005239:Fear; D005773:Gastroscopy; D006801:Humans; D008297:Male; D010146:Pain; D010361:Patients; D010465:Perception; D011369:Professional-Patient Relations; D012677:Sensation; D012718:Set, Psychology; D013315:Stress, Psychological