title: Pandrug resistance (PDR), extensive drug resistance (XDR), and multidrug resistance (MDR) among Gram-negative bacilli: need for international harmonization in terminology.
authors.forename: Matthew E
authors.initials: ME
authors.lastname: Falagas
authors.forename: Drosos E
authors.initials: DE
authors.lastname: Karageorgopoulos
mesh_terms: D024901:Drug Resistance, Multiple, Bacterial; D006090:Gram-Negative Bacteria / Q000187:drug effects*; D016905:Gram-Negative Bacterial Infections / Q000382:microbiology; D006801:Humans; D009626:Terminology as Topic