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1by Peter Ehrenkranz, Claudio F. Lanata, Mary E. Penny, Eduardo Salazar-Lindo, Roger I. GlassGet access
Published in Revista Panamericana de Salud Pública (2001)
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2by Jose Echaiz, Magaly Blas, Vijaya KancherlaGet access
Published in Revista Panamericana de Salud Pública (2018)
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Article in Journal/Newspaper