Authors: Solange R Salomao; Rafael W Cinoto; Adriana Berezovsky; Arnaud Araujo-Filho; Marcia R K H Mitsuhiro; Luana Mendieta; Paulo H A Morales; Gopal P Pokharel; Rubens Belfort; Leon B Ellwein Journal: Ophthalmic Epidemiol Date: 2008 May-Jun Impact factor: 1.648