Acar, M., Erdem Gür, Özer, Kaymakçı, M., Çiftçi, O., Buğdaycı, G. and Özdem, C. 2012. The role of serum matrix metalloproteinase-9 levels in the etiopathogenesis of nasal polyps. ENT Updates. 2, 2 (Feb. 2012). DOI:https://doi.org/10.2399/jmu.2012002002.