Extended-spectrum β-lactamases and AmpC producing Serratia marcescens causing healthcare associated infections in upper Egypt. Research Authors Ibrahim M. Ali 1 Nahla M. Elsherbiny2, Khalid M. Hassanein2, Mohamed T. Ahmed1 Research Department Department of Microbiology and Immunology Research Journal J. of global antimicrobial resistance. (2018), Vol:13, pp, 96.