Jayter Silva Paula1; João Marcello Furtado1; João Paulo Souza2; Van CharleS LanSingh3
DOI: 10.5935/0004-2749.20140086
1 Department of Ophthalmology, Otorhinolaryngology and Head and Neck Surgery, Ribeirão Preto interest to disclose. Medical School, Universidade de São Paulo, São Paulo, SP, Brazil
2 Department of Social Medicine, Ribeirão Preto Medical School, Universidade de São Paulo, São Paulo, SP, Brazil.
3 International Agency for the Prevention of Blindness, Queretaro, Mexico and Instituto Mexicano de Oftalmologia, Queretaro, Mexico.