Khadgi, S., U. Gurung, K. Shahi, and B. Pradhan. “Comparison of Intraoperative Bleeding During Bilateral Endoscopic Sinus Surgery With or Without Pterygopalatine Fossa Block”. Journal of Otorhinolaryngology and Facial Plastic Surgery, vol. 10, no. 1, June 2024, doi:10.22037/orlfps.v10i1.45592.