Sumitro, A. R., Salinding, A., Susila, D. ., & Sutikno, B. . (2022). Analysis of the effectiveness of sphenopalatine ganglion block on fentanyl needs in endoscopic endonasal surgery as measured by qNOX score. Bali Medical Journal, 11(3), 1582–1586. https://doi.org/10.15562/bmj.v11i3.3869