Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) PEDERSON CB,Longtern treatment of nasal polyps with beclomethasone dipropionate aersol ; II. Clinical results,Acta Otolaryngol,,,1976,82,,256-259,https://cir.nii.ac.jp/crid/1574231875190390784,