Efficacy and safety of midazolam compared to fentanyl as adjuvants to hyperbaric bupivacaine in spinal anesthesia: a systematic review and meta-analysis of randomized controlled trials. - Tadesse, Molla Amsalu; Alemu, Eniyew Assimie; Allene, Mengesha Dessie; Abebe, Melkam Mulugeta; Alimawu, Agmuas Asichale; Kebede, Fetene Seyoum; Wondemu, Emebet Seyum (BMC Anesthesiology, 2025)