Coque, Teresa M High occurrence of esp among ampicillin-resistant and vancomycin-susceptible Enterococcus faecium clones from hospitalized patients. [electronic resource] - The Journal of antimicrobial chemotherapy Dec 2002 - 1035-8 p. digital Publication Type: Comparative Study; Journal Article ISSN: 0305-7453 Standard No.: 10.1093/jac/dkf229 doi Subjects--Topical Terms: Ampicillin Resistance--geneticsBacterial Proteins--geneticsClone CellsEnterococcus faecium--geneticsHumansMembrane Proteins--geneticsPatient Admission--statistics & numerical dataVancomycin Resistance--genetics