title: [A controled study on long-term continuous tetracycline therapy in chronic suppurative bronchitis].
mesh_terms: D000328:Adult; D001991:Bronchitis / Q000188:drug therapy*; D002908:Chronic Disease; D002986:Clinical Trials as Topic; D006801:Humans; D008297:Male; D008875:Middle Aged; D012129:Respiratory Function Tests; D013492:Suppuration; D013752:Tetracycline / Q000627:therapeutic use*; D013997:Time Factors
chemical_list: D013752:Tetracycline
vernacular_title: Eine kontrollierte Untersuchung über Langzeitbehandlung mit kontinuierlicher Tetracyclin-Therapie bei chronischer eitriger Bronchitis.