“The Analgesic Effect of Dexamethasone and Magnesium Sulphate (MgSO4) as an adjuvant to 0.25% Bupivacaine in ultrasound guided Pectoral Nerve Block (PEC Block) for unilateral Modified Radical Mastectomy: A Comparative Study”, Comm. Based Med J, vol. 11, no. 1, pp. 4–13, Jun. 2022, doi: 10.3329/cbmj.v11i1.60252.