Undernutrition and short duration of breastfeeding association with child development: a population-based study Hermano A.L. Rocha; Luciano L. Correia; Álvaro J.M. Leite; Sabrina G.M.O. Rocha; Márcia M.T. Machado; Jocileide S. Campos; Antonio J.L.A. Cunha; Anamaria C. e Silva; Christopher R. Sudfeld;