Anemia among pregnant women attending primary healthcare units in the municipality of São Paulo, Brazil: evaluations after the mandatory fortification of wheat and maize flours with iron - Machado, Edna Helena da Silva; Carli, Eduardo de; Szarfarc, Sophia Cornbluth; Souza, José Maria Pacheco de; Fujimori, Elizabeth; Colli, Célia (Nutrire, 2016)