1. Department of Medical Microbiology and Infection Control, Hospital Jeroen Bosch, Nieuwstraat 34, 5211 NL 's-Hertogenbosch, The Netherlands
2. Laboratory of Microbiology, Wageningen University, Hesselink van Suchtelenweg 4, NL-6703 CT Wageningen, The Netherlands
3. PamGene International B.V., Nieuwstraat 30, 5211 NL 's-Hertogenbosch, The Netherlands