Drupal-Bibcite31<style face="normal" font="default" size="100%">Risk of hypoglycaemia in users of sulphonylureas compared with metformin in relation to renal function and sulphonylurea metabolite group: population based cohort study</style><style face="normal" font="default" size="100%">Risk of hypoglycaemia in users of sulphonylureas compared with metformin in relation to renal function and sulphonylurea metabolite group: population based cohort study</style>