1 Department of Clinical Medicine - Department of Clinical Epidemiology, Aarhus University, Aarhus, Denmark. vandenbrouckegrauls@amsterdamumc.nl.
2 Department of Medical Microbiology & Infection Control, Amsterdam University Medical Centers, location VUmc, Amsterdam, The Netherlands. vandenbrouckegrauls@amsterdamumc.nl.
3 Department of Medical Microbiology, University Medical Center Utrecht, Utrecht, the Netherlands.