We are writing on behalf of the BREATHE I study investigators.For background purposes regarding this Letter to the Editor, the BREATHE I study was a nonrandomized trial that studied 71 patients with documented, medically refractory, chronic rhinosinusitis (CRS) disease specifically involving the maxillary or maxillary and anterior ethmoid sinuses by computed tomography scan evidence. The patient population in this study was well defined, and patients were treated with balloon-only dilation of the maxillary sinus and ethmoid infundibulum, and followed for 24 months.
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