title: Double blind, placebo controlled trial of betamethasone nasal drops for nasal polyposis.
mesh_terms: D000281:Administration, Intranasal; D000293:Adolescent; D000328:Adult; D000368:Aged; D001623:Betamethasone / Q000008:administration & dosage* / Q000627:therapeutic use*; D002986:Clinical Trials as Topic; D004311:Double-Blind Method; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009298:Nasal Polyps / Q000188:drug therapy*; D011187:Posture
chemical_list: D001623:Betamethasone