Yadav R, Majhi P. A comparative study of efficacy of epidural versus interpleural bupivacaine for post operative analgesia after open cholecystectomy. J Coll Med Sci-Nepal [Internet]. 2014 Apr. 16 [cited 2024 Dec. 27];9(4):15-23. Available from: https://nepjol.info./index.php/JCMSN/article/view/10232