KingHRewersM. Diabetes in adults is now a third world problem. Bull WHO1991; 69: 643–8
2.
CastleWMWicksACB. A follow-up of 93 newly diagnosed African diabetics for 6 years. Diabetologia1980; 18: 121–3
3.
KleinRKleinBEKMossSECruickshanksKJ. The Wisconsin Epidemiologic Study of Diabetic Retinopathy: XIV. Ten-years incidence and progression of diabetic retinopathy. Arch Ophthalmol1994; 112: 1217–30