title: Respirophonographical measurements of the effect of bromhexin in the treatment of chronic bronchitis.
mesh_terms: D000368:Aged; D001314:Auscultation; D001964:Bromhexine / Q000627:therapeutic use*; D001991:Bronchitis / Q000175:diagnosis / Q000188:drug therapy*; D002908:Chronic Disease; D002986:Clinical Trials as Topic; D006801:Humans; D008297:Male; D010919:Placebos; D012119:Respiration; D012129:Respiratory Function Tests
chemical_list: D010919:Placebos; D001964:Bromhexine