Wuttiwongsanon C, Teeraboonyakul W. “Comparative Study Between Efficacy of 0.025% Oxymetazoline With 1% Lidocaine and 1% Ephedrine With 2% Lidocaine in Nasal Preparation before Nasal Endoscopy”. Journal of The Department of Medical Services 44, no. 1 (February 1, 2019): 63–66. Accessed April 24, 2024. https://he02.tci-thaijo.org/index.php/JDMS/article/view/246966.