Klebsiella pneumoniaeKlebsiella InfectionsKlebsiella oxytocabeta-LactamasesEnterobacteriaceaeEnterobacterMicrobial Sensitivity TestsCarbapenemsbeta-Lactam ResistanceNitrogenaseEscherichia coliBacterial ProteinsLiver AbscessNitrogen FixationEnterobacter aerogenesEnterobacteriaceae Infectionsbeta-LactamsGram-Negative BacteriaDrug Resistance, Multiple, BacterialCross InfectionPlasmidsCephalosporinsDNA, BacterialGenes, BacterialDrug Resistance, BacterialCeftazidimeLiver Abscess, PyogenicConjugation, GeneticHistidine Ammonia-LyaseMolecular Sequence DataPneumonia, BacterialProteusMolybdoferredoxinGram-Negative Bacterial InfectionsBacteremiaThienamycinsElectrophoresis, Gel, Pulsed-FieldRhinoscleromaProteus mirabilisSerratiaAcetylenePolysaccharides, BacterialBacterial CapsulesImipenemColistinRibitolEscherichia coli InfectionsHospitalsCefoxitinCefotaximeCephalosporin ResistanceEnterobacter cloacaeBacterial InfectionsSequence Analysis, DNAPiperacillinSpondylitis, AnkylosingO AntigensBacteriological TechniquesPenicillanic AcidUreaseButylene GlycolsIsoelectric FocusingAmpicillinCulture MediaBase SequenceGram-Positive BacteriaMinocyclineUrinary Tract InfectionsPseudomonas aeruginosaAnti-Infective AgentsCalymmatobacteriumOperonMultilocus Sequence TypingAztreonamPolymerase Chain ReactionCitrobacter freundiiSugar AlcoholsPorinsSerratia marcescensGlutamate-Ammonia LigaseSerotypingPropanediol DehydrataseCephalothinUrology Department, HospitalMolecular TypingCarbenicillinClavulanic AcidCloning, MolecularAmino Acid SequenceDisease OutbreaksGene Expression Regulation, BacterialDisk Diffusion Antimicrobial TestsMonobactamsCiprofloxacinAzotobacterHLA-B27 AntigenMutationColony Count, MicrobialAminoglycosidesGreece