K., S.; M. H., J. A. Twin pregnancy, the study of maternal and perinatal outcome: what being a twin is like?. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, [S. l.], v. 8, n. 11, p. 4457–4461, 2019. DOI: 10.18203/2320-1770.ijrcog20194875. Disponível em: https://www.ijrcog.org/index.php/ijrcog/article/view/7227. Acesso em: 27 oct. 2025.