J. E. de . Oliveira, A. P. . Ferrari, V. L. P. . Tonete, and C. M. G. de L. . Parada, “Perinatal results and first-year of life according to maternal skin color: a cohort study”, Rev. Esc. Enferm. USP, vol. 53, p. e03480, Jul. 2019, doi: 10.1590/s1980-220x2018003903480 .