Rosenfeld R.M. et al 2015. Clinical practice guideline (update): adult sinusitis executive summary". Otolaryngology. 152 (4): 598–609. Archived 2016-06-02 at the Wayback Machine
Rosenfeld R.M. et al 2015. Clinical practice guideline (update): adult sinusitis executive summary". Otolaryngology. 152 (4): 598–609. Archived 2016-06-02 at the Wayback Machine