Cárdenas-García, L. J., M. E. Sánchez-Zamora, O. F. Ramírez-de la Roche, and A. Robledo-Domínguez. “Use of Emergency Contraception in a Group of Female University Students”. Atención Familiar, vol. 21, no. 3, Mar. 2015, doi:10.22201/facmed.14058871p.2014.3.47949.