title: Mucolytic treatment in chronic obstructive pulmonary disease. Double-blind comparative clinical trial with N-acetylcysteine, bromhexine and placebo.
mesh_terms: D000111:Acetylcysteine / Q000627:therapeutic use*; D000328:Adult; D000368:Aged; 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; D008875:Middle Aged; D010919:Placebos
chemical_list: D010919:Placebos; D001964:Bromhexine; D000111:Acetylcysteine