title: Co-trimoxazole versus cefaclor in acute on chronic bronchitis.
mesh_terms: D000368:Aged; D001991:Bronchitis / Q000188:drug therapy*; D002433:Cefaclor / Q000627:therapeutic use*; D002506:Cephalexin / Q000031:analogs & derivatives*; D004338:Drug Combinations / Q000627:therapeutic use; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D013183:Sputum / Q000382:microbiology; D013420:Sulfamethoxazole / Q000627:therapeutic use*; D014295:Trimethoprim / Q000627:therapeutic use*; D015662:Trimethoprim, Sulfamethoxazole Drug Combination
chemical_list: D004338:Drug Combinations; D002433:Cefaclor; D015662:Trimethoprim, Sulfamethoxazole Drug Combination; D014295:Trimethoprim; D013420:Sulfamethoxazole; D002506:Cephalexin