Evaluation of the comparative influence of magnesium sulfate single and combination with ritodrine hydrochloride in the prevention of preterm delivery . Bioscience Journal [online], 2020. [online], vol. 36, no. 4, pp. 1491–1497. [Accessed11 December 2025]. DOI 10.14393/BJ-v36n4a2020-49897. Available from: https://seer.ufu.br/index.php/biosciencejournal/article/view/49897.