Ardila Manjarrez, E.J., Pérez Angarita, L.L. and Villareal Rueda, P.A. (2007) “Ketamine versus Fentanyl for newborn sedation”, Medicina UPB, 26(2), pp. 97–108. Available at: https://revistas.upb.edu.co/index.php/medicina/article/view/2277 (Accessed: 11 August 2026).