3Diabetes Control and Complications Trail Research Group.Intensive diabetes treatment and complication in IDDM[J].N Engl Med 1993,329:977～986.
4UK prospective Study Group.Intensive blood-glucose control with sulphonylureas or insulin compared with conventional treatment and risk of complications in patients with type 2diabetes(UKPDS33)[J].Lancet 1998,352:837～853.
