Bocanegra Rivera, Juan Carlos, and Juliana Caicedo Salazar. “Intra-Operative Arrhythmias: Sick Sinus Syndrome Manifested During General Anesthesia”. Colombian Journal of Anesthesiology, vol. 39, no. 2, Apr. 2011, pp. 259-65, https://www.revcolanest.com.co/index.php/rca/article/view/759.