1. Medical Microbiology and Infectious Diseases, The School of Medicine, University of Wales Swansea, Swansea - UK
2. Institute of Medical Microbiology, Virology and Hygiene, Center for Clinical and Theoretical Medicine, University Clinic Hamburg-Eppendorf, Hamburg - Germany
3. Institute of Medical Microbiology and Hygiene, University of Lübeck, Lübeck - Germany