title: Transtracheal aspiration: a useful technique for the internist.
mesh_terms: D000368:Aged; D001419:Bacteria / Q000302:isolation & purification; D001707:Biopsy, Needle / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D011014:Pneumonia / Q000382:microbiology; D014132:Trachea / Q000601:surgery