@article{article99162c97,
title   = {Detection of vitamin A deficiency in Brazilian preschool children using the serum 30-day dose-response test},
author = {Ferraz, Ivan Savioli and Daneluzzi, Julio Cesar and Vannucchi, Hélio and Jordão Junior, Alceu Afonso and Ricco, Rubens Garcia and Del Ciampo, Luiz Antonio and Martinelli Júnior, Carlos Eduardo and Engelberg, Alexander Antony D'Angio and Bonilha, Luís Roberto de Castro Martins and Flores, H.},
year = {2004},
doi = {10.1038/sj.ejcn.1601978},
journal   = {European Journal of Clinical Nutrition}
}