Wisudarti, C.F.R., Mahmud and Mi’raj, G.G. 2023. An Ultrasonography Guidance Lumbar Epidural Anaesthesia in Patient with Difficult Landmarks. Jurnal Komplikasi Anestesi. 10, 1 (May 2023), 70-76. DOI:https://doi.org/10.22146/jka.v10i1.8329.