sentences:  The study was run at the Ospedale di Marino, near Rome, in Italy by an independent diabetologist / endocrinologist – unconnected with the simulator's development.Twenty-four volunteers (12 male and 12 female) with type 1 diabetes of more than 6-years duration, aged 19–48 years, who gave written informed consent, were randomly assigned to one of two study groups, each receiving different teaching interventions.Group A was exposed to the AIDA diabetes simulator, while Group B (the control group) received conventional lessons with slides and transparencies.