VIJAYAKRISHNAN, M.; NATHAN, N. An ultrasound study of foetal head-perineum distance in term pregnant women to estimate successful vaginal delivery. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, [S. l.], v. 15, n. 1, p. 266–272, 2025. DOI: 10.18203/2320-1770.ijrcog20254292. Disponível em: https://www.ijrcog.org/index.php/ijrcog/article/view/16277. Acesso em: 30 dec. 2025.