from two groups of diabetics , i.e . an `` '' invesitgation-group '' '' of 40 cases and a `` '' comparison-group '' '' of 55 cases , the following characteristics of a state preliminary to proliferative diabetic retinopathy are resulting : early commencing of angiopathy by means of proteinuria ( nephropathy ) , progression of retinopathy ( pre-stage ) , pronounced progressiveness of the accompanying nephropathy and arterial hypertension , and finally uncommon diabetic heredo-familiarity .
C0042373
of angiop
C0020538
and arterial hyperten