title: [Studies of bacterial infection in cases with chronic lower airway infections by repeated transtracheal aspiration].
mesh_terms: D000368:Aged; D001991:Bronchitis / Q000382:microbiology; D005260:Female; D006193:Haemophilus influenzae / Q000302:isolation & purification; D006801:Humans; D008173:Lung Diseases, Obstructive / Q000382:microbiology*; D008297:Male; D008875:Middle Aged; D012852:Sinusitis / Q000382:microbiology; D013296:Streptococcus pneumoniae / Q000302:isolation & purification; D013396:Suction