Prasad, S. et al. 2026. Comparison of Opioid-Free and Opioid-Based Anesthesia for Postoperative Analgesia in Laparoscopic Urological Surgery: A Randomized Controlled Trial . Journal of the Portuguese Society of Anesthesiology. 35, 1 (Apr. 2026), 8–12. DOI:https://doi.org/10.25751/rspa.44886.