García-Eslava, Jairo Santiago, Julián E. Barahona-Correa, Diego Alberto Moreno, and Antonio Bonilla. “Usefulness of Ultrasound: Intrathecal Pump Refill in the Management of Chronic Pain. A Case Report”. Colombian Journal of Anesthesiology 46, no. 1 (January 1, 2018): 68–71. Accessed March 28, 2024. https://www.revcolanest.com.co/index.php/rca/article/view/329.