CefoxitinCephamycinsBacteroides fragilisCephalosporinsCefotetanCephalothinMicrobial Sensitivity TestsCefmetazoleMoxalactamAnti-Bacterial AgentsCephalosporinasebeta-LactamasesCefamandoleBacteria, Anaerobicbeta-LactamsBacteroidesOxacillinCefotaximeCefoperazoneBacteroides InfectionsEnterobacteriaceaeDrug Resistance, MicrobialCeftizoximeClindamycinProbenecidImipenemLactamsEnterobacterBacterial InfectionsPremedicationProteusKlebsiellaKlebsiella pneumoniaeBacteriaFusobacteriumTicarcillinMetronidazoleMethicillin ResistanceCefazolinCephalosporin ResistancePenicillinsPenicillanic AcidFormularies, HospitalPenicillin-Binding ProteinsClavulanic AcidsDisk Diffusion Antimicrobial TestsPenicillinasebeta-Lactam ResistancePiperacillinBacterial ProteinsHospital Bed Capacity, 500 and overProteus vulgaris