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Acta Obstétrica e Ginecológica Portuguesa
Print version ISSN 1646-5830

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GOMES, Marina Sousa et al. Maternal vitamin D level in the first trimester and pregnancy outcomes: a prospective study. Acta Obstet Ginecol Port [online]. 2021, vol.15, n.1, pp.17-22.  Epub Mar 31, 2021. ISSN 1646-5830.