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Summary of therapies
Grades of recommendation: A, consistent level 1 studies; B, consistent level 2 or 3 studies or extrapolations from level 1 studies; C, level 4 studies or extrapolations from level 2 or 3 studies; D, level 5 evidence or troublingly inconsistent or inconclusive studies of any level.
QOL = quality of life; CF = cystic fibrosis; CRS = chronic rhinosinusitis; FESS = functional endoscopic sinus surgery; NPs = nasal polyps.
