Formalejo, Jan Paul, and Jay Pee Amable. “Cerebro-Spinal Fluid Leak in Skull Base Reconstruction Using Hadad - Bassagasteguy Flap After Endoscopic Endonasal Transsphenoidal Surgery: A Case Series”. Philippine Journal of Otolaryngology Head and Neck Surgery 36, no. 2 (November 11, 2021): 22. Accessed April 19, 2024. https://pjohns.pso-hns.org/index.php/pjohns/article/view/1797.