Herrera-Mora, Ana Eugenia, Viviana Mojica-Manrique, and Mauricio Salas-González. “Use of the Bilateral Erector Spinae (ESP) Block for Postoperative Analgesia Following the Removal of the Nuss Bar: Case Report”. Colombian Journal of Anesthesiology 47, no. 3 (July 1, 2019): 184–188. Accessed April 23, 2024. https://www.revcolanest.com.co/index.php/rca/article/view/82.