title: [Chronic infections of the lower respiratory tract. Antibiotic therapy. Results of a double-blind study: tetracycline-HCl as a monosubstance versus tetracycline and bromeline].
mesh_terms: D000368:Aged; D001963:Bromelains / Q000627:therapeutic use*; D004338:Drug Combinations; D005260:Female; D006801:Humans; D008297:Male; D012141:Respiratory Tract Infections / Q000188:drug therapy*; D013752:Tetracycline / Q000627:therapeutic use*
chemical_list: D004338:Drug Combinations; D001963:Bromelains; D013752:Tetracycline
vernacular_title: Chronische Infekte des unteren Respirationstraktes.