1. Department of Internal Medicine; St Antonius Hospital; Nieuwegein The Netherlands
2. Department of Internal Medicine; University Medical Centre; Utrecht The Netherlands
3. Department of Intensive Care Medicine; Onze Lieve Vrouwen Gasthuis; Amsterdam The Netherlands
4. Department of Medical Microbiology and Immunology; St Antonius Hospital; Nieuwegein The Netherlands
5. Department of Sciences; Roosevelt Academy; Middelburg The Netherlands