Bacterial flora of the respiratory tract in chronic bronchitis: comparison of transtracheal, fiberbronchoscopic, and oropharyngeal sampling methods.
D000368:Aged; D001419:Bacteria / Q000302:isolation & purification*; D001991:Bronchitis / Q000382:microbiology*; D001999:Bronchoscopy; D002908:Chronic Disease; D006193:Haemophilus influenzae / Q000302:isolation & purification; D006801:Humans; D007442:Intubation, Intratracheal; D008297:Male; D008875:Middle Aged; D012137:Respiratory System / Q000382:microbiology*; D013048:Specimen Handling / Q000379:methods; D013296:Streptococcus pneumoniae / Q000302:isolation & purification