Anti-Bacterial AgentsMicrobial Sensitivity TestsDrug Resistance, BacterialDrug Resistance, Multiple, BacterialAntibiotic ProphylaxisDisk Diffusion Antimicrobial TestsDrug Resistance, MicrobialCephalosporinsPenicillinsAnti-Infective AgentsBacteriaFluoroquinolonesRifampinGentamicinsDrug Therapy, CombinationEscherichia coliPseudomonas aeruginosaAmikacinDrug Resistance, Multiplebeta-LactamasesDNA, BacterialBacterial InfectionsSurgical Wound InfectionCeftazidimeTime FactorsCefazolinVancomycinTeicoplaninFeverDrug Administration SchedulePenicillin VPiperacillinTreatment OutcomeTobramycinPenicillanic AcidAmoxicillinCeftriaxoneDoxycyclinePeritonitisInfant, Newborn, DiseasesGram-Positive Bacterial InfectionsAmpicillinGram-Negative Bacterial InfectionsCiprofloxacinBacteremiaEndocarditis, BacterialCefotaximeNeutropeniaMetronidazolePneumonia, BacterialProsthesis-Related InfectionsTrimethoprim-Sulfamethoxazole CombinationPseudomonas InfectionsProspective StudiesAgranulocytosisStaphylococcal InfectionsRetrospective StudiesSepsisAdministration, OralCross InfectionAntibiotics, AntineoplasticStreptomycesAminoglycosidesRandomized Controlled Trials as TopicAcute DiseasePractice Guidelines as TopicDrug Utilizationbeta-LactamsTetracyclineErythromycinFermentationStaphylococcus aureusMacrolidesAntineoplastic Combined Chemotherapy ProtocolsStreptomycinKanamycinRisk FactorsBacterial ProteinsGram-Positive BacteriaGram-Negative BacteriaClindamycinPenicillin GDrug PrescriptionsAzithromycinLactamsChloramphenicolChemistryChemical PhenomenaPhysician's Practice PatternsCyclophosphamidePenicillin ResistanceNeomycinDose-Response Relationship, DrugThienamycinsColony Count, MicrobialOxytetracyclineLincomycinCulture MediaPolymyxinsCephaloridine