title: [Cross infections: a viewpoint of internal medicine].
mesh_terms: D001419:Bacteria / Q000302:isolation & purification*; D003428:Cross Infection / Q000382:microbiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011550:Pseudomonas aeruginosa / Q000145:classification / Q000302:isolation & purification