title: Double blind crossover randomised study of bromhexine in chronic obstructive airway disease.
mesh_terms: D000328:Adult; D001964:Bromhexine / Q000627:therapeutic use*; D002986:Clinical Trials as Topic; D004311:Double-Blind Method; D005260:Female; D006801:Humans; D008173:Lung Diseases, Obstructive / Q000188:drug therapy*; D008297:Male
chemical_list: D001964:Bromhexine