@misc{misc91633c94,
title   = {Diabetic retinopathy (DR) frequency among patients from a brazilian university hospital, referred irrespective of ocular complaints},
author = {Souza, Nivaldo Vieira de and Souza, E. V. and Rodrigues, Maria de Lourdes Veronese},
year = {2002},
booktitle   = {EVER 2002 : European Association for Vision and Eye Research}
}