Ligon, Jona Minette E., and Natividad A. Almazan. 2018. “The Effectiveness of Intravenous Tranexamic Acid on Blood Loss and Surgical Time During Endoscopic Sinus Surgery: A Systematic Review”. Philippine Journal of Otolaryngology Head and Neck Surgery 31 (2):8-12. https://doi.org/10.32412/pjohns.v31i2.221.