The "open negative" problem.
D000328:Adult; D000995:Antitubercular Agents / Q000627:therapeutic use*; D004357:Drug Synergism; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D014397:Tuberculosis, Pulmonary / Q000188:drug therapy*
D000995:Antitubercular Agents