Evaluations of retinopathy in the VA Cooperative Study on Glycemic Control and Complications in Type II Diabetes (VA CSDM). A feasibility study. - Emanuele,N.; Klein,R.; Abraira,C.; Colwell,J.; Comstock,J.; Henderson,W.G.; Levin,S.; Nuttall,F.; Sawin,C.; Silbert,C.; Lee,H.S.; Johnson-Nagel,N. (Diabetes Care, 1996)