EFFICACY OF OPIOID-FREE ANESTHESIA IN MODIFIED RADICAL MASTECTOMY: A CROSS-SECTIONAL OBSERVATIONAL STUDY Article Assaf G.R., Yared Fares, Dib Mary-Joe, Mouawad Tony, Tarabay Oriana, Noujeim Jean-Paul, El-Helou Etienne, Kaady Jean, Abboud Bassam Annals of Medicine and Surgery. Elsevier Ltd. Vol. 85. 2023. P. 4289-4292