O. Brinchmann-Hansen, K. Dahl-Jørgensen, L. Sandvik, K. F. Hanssen
Brinchmann-Hansen O, Dahl-Jørgensen K, Sandvik L, Hanssen K F.
Blood glucose concentrations and progression of diabetic retinopathy: the seven year results of the Oslo study.
British Medical Journal 1992; 304 :19
doi:10.1136/bmj.304.6818.19