Affiliation: | 1. Institute for Medical Microbiology and Hospital Epidemiology, Hannover Medical School, Hannover, Germany;2. Institute for Medical Microbiology and Hospital Epidemiology, Hannover Medical School, Hannover, Germany Correspondence to: Mathias Hornef Institute for Medical Microbiology and Hospital Epidemiology Hannover Medical School Carl-Neuberg Str. 1 D-30625 Hannover, Germany Tel.: +49 511 532 4540 Fax: +49 511 532 4366 e-mail: hornef.mathias@mh-hannover.de |