title: Coincident infection with legionnaires' disease bacterium and Pittsburgh pneumonia agent.
mesh_terms: D006801:Humans; D007875:Legionella / Q000302:isolation & purification; D007877:Legionnaires' Disease / Q000150:complications*; D008297:Male; D008875:Middle Aged; D011014:Pneumonia / Q000150:complications* / Q000382:microbiology