Treatment of chronic bronchitis in general practice with methacycline.
D001991:Bronchitis / Q000188:drug therapy*; D006801:Humans; D008690:Methacycline / Q000009:adverse effects / Q000627:therapeutic use; D010118:Oxytetracycline / Q000009:adverse effects* / Q000627:therapeutic use*
D008690:Methacycline; D010118:Oxytetracycline