Singh, S., Mishra, R., & Deigheidy, E. M. (2025). Comparison of Efficacy and Efficiency of Trans-Nasal Spheno-Palatine Ganglion Block for the Management of Post-Dural Puncture Headache. Journal of the Portuguese Society of Anesthesiology, 34(3), 92–98. https://doi.org/10.25751/rspa.41691