title: Double blind cross over trial of ipratropium and placebo in chronic rhinorrhoea.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001286:Atropine Derivatives / Q000627:therapeutic use*; D002986:Clinical Trials as Topic; D004311:Double-Blind Method; D005260:Female; D006801:Humans; D009241:Ipratropium / Q000627:therapeutic use*; D008297:Male; D008875:Middle Aged; D009297:Nasal Mucosa / Q000378:metabolism; D012220:Rhinitis / Q000188:drug therapy* / Q000503:physiopathology
chemical_list: D001286:Atropine Derivatives; D009241:Ipratropium