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Flow chart of the study design: In the written and oral information group, patients received the written information one week before the planned endoscopy and oral information the day of the endoscopy. In the oral information group, patients only received oral routine non standardised information the day of the endoscopy. All patients were then asked to rate the endoscopy course (global assessment of endoscopy) and to response to the 8 quality-of-information items.
