D. . López-Herrera-Rodríguez, R. . Guerrero-Domínguez, J. . Acosta-Martínez, and F. . Sánchez-Carrillo, “Ultrasound-guided rectus sheath block for an umbilical hernia repair in a patient with Wolff-Parkinson-White syndrome: A case report”, Colomb. J. Anesthesiol., vol. 43, no. 4, pp. 343–345, Oct. 2015.