1)The Diabetes Control and Complication Trial Research Group:The effect of intensive treatment of diabetes on the development and progression of long-term complication in insulin-dependent diabetes mellitus. N Engl J Med 329:977-986, 1993
2)The Diabetes Control and Complications Trial/Epidemiology of Diabetes Interventions and Complication Research Group:Retinopathy and nephropathy in patients with type 1 diabetes four years after a trial of intensive therapy. N Engl J Med 342:381-389, 2000
3)The Diabetes Control and Complications Trial/Epidemiology of Diabetes Interventions and Complications(DCCT/EDIC)study Research Group:Intensive diabetes treatment and cardiovascular disease in patients with type 1 diabetes. N Engl J Med 353:2643-2653, 2005
4)UK prospective Diabetes Study(UKPDS)Group:Intensive blood-glucose control with sulphonylureas or insulin compared with conventional treatment and risk of complications in patients with type 2 diabetes(UKPDS 33). Lancet 352:837-853, 1998