مراد ر. . “Effects Of Addition Of Systemic Tramadol Or Adjunct Tramadol To Lidocaine Used For Intravenous Regional Anesthesia In Patients Undergoing Hand Surgery”. Latakia University Journal -Medical Sciences Series, vol. 43, no. 4, Sept. 2021, https://journal.tishreen.edu.sy/index.php/hlthscnc/article/view/10808.