title: Flexible fiberoptic bronchoscopy in lower respiratory tract infection.
mesh_terms: D000293:Adolescent; D000328:Adult; D001999:Bronchoscopy; D005260:Female; D005336:Fiber Optic Technology; D006801:Humans; D008297:Male; D008875:Middle Aged; D012141:Respiratory Tract Infections / Q000175:diagnosis*