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Exclusive breastfeeding modifies the association between maternal education and child development: a cross-sectional study nested in a cohort Luiza Alves Ford; Gabriela Buccini; Amanda Castelo Saragosa; Isadora de Araújo Martins; Janaína Matos Moreira; Stela Maris Aguiar Lemos; Claudia Regina Lindgren Alves; Vivian Mara Gonçalves de Oliveira Azevedo;