Ethambutol in polyresistant cases.
D000284:Administration, Oral; D002908:Chronic Disease; D004352:Drug Resistance, Microbial; D004977:Ethambutol / Q000627:therapeutic use*; D006801:Humans; D013997:Time Factors; D014397:Tuberculosis, Pulmonary / Q000188:drug therapy*
D004977:Ethambutol