“RETRACTED: Intravenous versus Perineural Dexmedetomidine in Prolongation of Analgesia With Regional Anesthesia: A Meta-Analysis and Systematic Review”. Pain medicine 6, no. 2 (August 28, 2021): 10–28. Accessed July 10, 2026. https://painmedicine.org.ua/index.php/pnmdcn/article/view/255.