Impact on variables of severe hypoglycaemia and healthcare costs of the use of the FreeStyle system in paediatric population with type 1 diabetes mellitus Isabel Leiva-Gea; Rocío Porcel Chacón; Ana Belén Ariza Jiménez; María Mora Loro; Leopoldo Tapia-Ceballos; Jose Jiménez-Hinojosa; Ana Gómez Perea; Juan Pedro López Siguero;