L. A. . Bedoya-Ruiz, A. A. . Agudelo-Suárez, D. A. Restrepo-Ochoa, and S. . Henao-Villegas, “Institutional practices in maternal health according to social class. Bogotá, Colombia, 2018”, Rev. colomb. obstet. ginecol., vol. 71, no. 4, pp. 323–344, Dec. 2020.