BHALLA, S.; BHATTI, S. G.; DEVGAN, S. Obstetric and perinatal outcome of twin pregnancy: a prospective study in a tertiary care hospital in North India. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, [S. l.], v. 7, n. 6, p. 2455–2461, 2018. DOI: 10.18203/2320-1770.ijrcog20182368. Disponível em: https://www.ijrcog.org/index.php/ijrcog/article/view/4867. Acesso em: 29 dec. 2025.