title: [Long-term studies on the treatment of chronic bronchitis].
mesh_terms: D001991:Bronchitis / Q000188:drug therapy*; D002908:Chronic Disease / Q000188:drug therapy; D005260:Female; D006801:Humans; D008297:Male; D010118:Oxytetracycline / Q000627:therapeutic use*; D013183:Sputum / Q000382:microbiology
chemical_list: D010118:Oxytetracycline
vernacular_title: Langzeituntersuchungen zur Behandlung der chronischen Bronchitis.