ISLAM, S. R.; BEGUM, H.; KAMAL, M. M.; BHUIYAN, M. S. A.; KHATUN, U. S. Effects of ketamine hydrochloride (preservative free) and fentanyl citrate added to low dose hyperbaric bupivacaine for sub-arachnoid block in lower uterine caesarian section – a comperative study. Journal of the Bangladesh Society of Anaesthesiologists, [S. l.], v. 24, n. 2, p. 53–59, 2014. DOI: 10.3329/jbsa.v24i2.19802. Disponível em: https://banglajol.info/index.php/JBSA/article/view/19802. Acesso em: 28 sep. 2022.