Analytical study to assess maternal outcome in booked and unbooked obstetric cases. International Journal of Biomedical and Advance Research, [S. l.], v. 7, n. 12, p. 569–573, 2016. DOI: 10.7439/ijbar.v7i12.3725. Disponível em: https://ssjournals.co.in/index.php/ijbar/article/view/3725. Acesso em: 11 mar. 2026.