Bolaños-Arboleda, D. .; Fonseca-Ruiz, N. J. .; Socha-García, N. I.; Garáa-Peñuela, E. .; Monsalve-Mejía, G. . Etilefrine Vs. Phenylephrine for Hypotension During Spinal Anesthesia for Cesarean Section: Multicenter, Randomized, Double Blind Controlled Clinical Trial. Colomb. J. Anesthesiol. 2016, 44, 89–96.