Effect of Vitamin A status during pregnancy on maternal anemia and newborn birth weight: results from a cohort study in the Western Brazilian Amazon - Neves, Paulo Augusto Ribeiro; Castro, Marcia C; Oliveira, Clariana Vitoria Ramos de; Malta, Maíra Barreto; Lourenço, Bárbara Hatzlhoffer; Cardoso, Marly Augusto (European journal of nutrition, 2020)