Comparison of Pre-emptive Use of Diclofenac, Ketorolac and Tramadol for Post-operative Pain in Laparoscopic Cholecystectomy. Journal of the Bangladesh Society of Anaesthesiologists, [S. l.], v. 20, n. 1, p. 24–29, 2009. DOI: 10.3329/jbsa.v20i1.4002. Disponível em: https://banglajol.info/index.php/JBSA/article/view/4002. Acesso em: 30 jun. 2026.