Comparison of tetracycline and trimethoprim-sulphamethoxazole in acute episodes in chronic chest infections.
D001991:Bronchitis / Q000188:drug therapy*; D002908:Chronic Disease; D002986:Clinical Trials as Topic; D005493:Folic Acid Antagonists / Q000627:therapeutic use*; D006801:Humans; D011743:Pyrimidines / Q000627:therapeutic use*; D013183:Sputum; D013420:Sulfamethoxazole / Q000627:therapeutic use*; D013752:Tetracycline / Q000627:therapeutic use*
D005493:Folic Acid Antagonists; D011743:Pyrimidines; D013752:Tetracycline; D013420:Sulfamethoxazole