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Thomas M, Yawn BP, Price D, Lund V, Mullol J, Fokkens W; European Position Paper on Rhinosinusitis and Nasal Polyps Group.Thomas M, et al.Prim Care Respir J. 2008 Jun;17(2):79-89. doi: 10.3132/pcrj.2008.00029.Prim Care Respir J. 2008.PMID: 18438594Free PMC article.Review.
Freling N, Roele E, Schaefer-Prokop C, Fokkens W.Freling N, et al.Laryngoscope. 2009 Sep;119(9):1745-52. doi: 10.1002/lary.20606.Laryngoscope. 2009.PMID: 19551850