title: Doxycycline and oxytetracycline in bronchitis: a double blind controlled trial.
mesh_terms: D001991:Bronchitis / Q000188:drug therapy*; D002986:Clinical Trials as Topic; D003365:Costs and Cost Analysis; D004318:Doxycycline / Q000008:administration & dosage / Q000627:therapeutic use*; D006801:Humans; D010118:Oxytetracycline / Q000008:administration & dosage / Q000627:therapeutic use*; D013183:Sputum; D013492:Suppuration / Q000188:drug therapy; D013997:Time Factors
chemical_list: D004318:Doxycycline; D010118:Oxytetracycline