title: [Diagnostic value of fiberoptic bronchoscopy examination in smear-negative pulmonary tuberculosis].
mesh_terms: D000328:Adult; D000368:Aged; D001999:Bronchoscopy; D003951:Diagnostic Errors; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009169:Mycobacterium tuberculosis / Q000302:isolation & purification; D013183:Sputum / Q000382:microbiology*; D014397:Tuberculosis, Pulmonary / Q000175:diagnosis* / Q000382:microbiology