1. Department of Medical Microbiology and Infectious Diseases, Erasmus University Medical Center Rotterdam, Rotterdam,1
2. Departments of Pulmonary Diseases2 and
3. Department of Medical Microbiology, Diakonessen Hospital, Utrecht,3 and
4. Medical Microbiology and Immunology,4 St. Antonius Hospital, Nieuwegein,2
5. Department of Medical Microbiology, St. Elisabeth Hospital, Tilburg,5 The Netherlands