Rosenfeld R.M. et al 2015. Clinical practice guideline (update): adult sinusitis executive summary". Otolaryngology. 152 (4): 598–609. [1]Archived 2016-06-02 at the Wayback Machine
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Rosenfeld R.M. et al 2015. Clinical practice guideline (update): adult sinusitis executive summary". Otolaryngology. 152 (4): 598–609. [1]Archived 2016-06-02 at the Wayback Machine