R., K.; S., S. N. A case report of heterotopic pregnancy. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, [S. l.], v. 11, n. 1, p. 269–271, 2021. DOI: 10.18203/2320-1770.ijrcog20215118. Disponível em: https://www.ijrcog.org/index.php/ijrcog/article/view/11070. Acesso em: 26 oct. 2025.