Double blind, placebo controlled trial of betamethasone nasal drops for nasal polyposis.Br Med J (Clin Res Ed) 1985; 291 doi: http://dx.doi.org/10.1136/bmj.291.6498.788 (Published 21 September 1985) Cite this as: Br Med J (Clin Res Ed) 1985;291:788
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