1. Department of Medical Microbiology, Academic Medical Center, Amsterdam,1
2. Diagnostic Laboratory for Infectious Diseases and Perinatal Screening, National Institute of Public Health and the Environment, Bilthoven,2
3. Department of Medical Microbiology and Infectious Diseases, Erasmus University Medical Center, Rotterdam,3 and
4. Departments of Medical Microbiology and Immunology4 and
5. Pulmonary Diseases,5 St. Antonius Hospital, Nieuwegein, The Netherlands