title: Source and significance of Pseudomonas aeruginosa in sputum. Patients requiring tracheal suction.
mesh_terms: D001434:Bacteriophage Typing; D001996:Bronchopneumonia / Q000209:etiology; D003428:Cross Infection; D004322:Drainage; D006801:Humans; D008297:Male; D011552:Pseudomonas Infections / Q000209:etiology*; D011550:Pseudomonas aeruginosa / Q000302:isolation & purification*; D013183:Sputum; D014132:Trachea