title: A comparative trial of co-trimoxazole and doxycycline in the treatment of acute exacerbations of chronic bronchitis.
mesh_terms: D000208:Acute Disease; D000328:Adult; D000368:Aged; D001424:Bacterial Infections / Q000188:drug therapy*; D001991:Bronchitis / Q000188:drug therapy*; D002908:Chronic Disease; D002986:Clinical Trials as Topic; D004318:Doxycycline / Q000627:therapeutic use*; D004338:Drug Combinations; D004341:Drug Evaluation; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D013420:Sulfamethoxazole / Q000009:adverse effects / Q000627:therapeutic use*; D014295:Trimethoprim / Q000009:adverse effects / Q000627:therapeutic use*
chemical_list: D004338:Drug Combinations; D014295:Trimethoprim; D013420:Sulfamethoxazole; D004318:Doxycycline