Fernández-Martín, María Teresa, Servando López-Álvarez, and Mario Fajardo-López. 2018. “Interfascial Intercostal Nerves Block: Alternative to Epidural Analgesia in Open Gastrectomy? Report on 4 Clinical Cases”. Colombian Journal of Anesthesiology 46 (3):259-63. https://www.revcolanest.com.co/index.php/rca/article/view/547.