G. de A. Ferreira, M. A. Rezende, R. L. F. de S. Meneghim, and S. A. Schellini, “Barriers between community screening for visual problems and treatments in a tertiary center”, Rev. saúde pública, vol. 52, p. 85, Nov. 2018, doi: 10.11606/S1518-8787.2018052000589.