Authors: Negrel, AD Maul, E Pokharel, GP Zhao, JL Ellwein, LB

Citation: Ad. Negrel et al., Refractive Error Study in Children: Sampling and measurement methods for amulti-country survey, AM J OPHTH, 129(4), 2000, pp. 421-426

Authors: Maul, E Barroso, S Munoz, SR Sperduto, RD Ellwein, LB

Citation: E. Maul et al., Refractive Error Study in Children: Results from La Florida, Chile, AM J OPHTH, 129(4), 2000, pp. 445-454