López-Herrera-Rodríguez, Daniel, Rosana Guerrero-Domínguez, Jesús Acosta-Martínez, and Francisco Sánchez-Carrillo. 2015. “Ultrasound-Guided Rectus Sheath Block for an Umbilical Hernia Repair in a Patient With Wolff-Parkinson-White Syndrome: A Case Report”. Colombian Journal of Anesthesiology 43 (4):343–345. https://www.revcolanest.com.co/index.php/rca/article/view/360.