Comparative Study Between Tramadol Hydrochloride and Pethidine for Control of Shivering Under Regional Anaesthesia in Obstetric Patients. Journal of the Bangladesh Society of Anaesthesiologists, [S. l.], v. 32, n. 2, p. 77–82, 2019. DOI: 10.3329/jbsa.v32i2.66865. Disponível em: https://banglajol.info/index.php/JBSA/article/view/66865. Acesso em: 29 jun. 2026.