Federico Perez1, Robert A Bonomo2. 1. Louis Stokes Cleveland Veterans Affairs Medical Center, Cleveland, OH 44106, USA; Case Western Reserve University and Veterans Affairs Center for Antimicrobial Resistance and Epidemiology, Cleveland, OH, USA. Electronic address: fxp18@case.edu. 2. Louis Stokes Cleveland Veterans Affairs Medical Center, Cleveland, OH 44106, USA; Case Western Reserve University and Veterans Affairs Center for Antimicrobial Resistance and Epidemiology, Cleveland, OH, USA.