IBRAHIM, R.; NWOBODO, E.; TUNAU, K.; BURODO, A.; SULAIMAN, B.; GARBA, J.; SAIDU, A. The effect of hyoscine butyl bromide in shortening the duration of first stage of labor: A single‑blind randomized control study. Tropical Journal of Obstetrics and Gynaecology, [S. l.], v. 36, n. 1, p. 28–32, 2019. DOI: 10.4103/tjog.tjog_57_18. Disponível em: https://www.ajol.info/index.php/tjog/article/view/185787. Acesso em: 6 aug. 2026.