1. Department of Medical Microbiology, Radboud University Nijmegen Medical Center, P.O. Box 9101, 6500 HB Nijmegen
2. University Lung Center Dekkerswald, Radboud University Nijmegen Medical Center, P.O. Box 66, 6561 KE Groesbeek, The Netherlands
3. Department of Orthopedic Surgery, Radboud University Nijmegen Medical Center, P.O. Box 9101, 6500 HB Nijmegen, The Netherlands
4. Tuberculosis Reference Laboratory, National Institute for Public Health and the Environment (RIVM), P.O. Box 1, 3720 BA Bilthoven, The Netherlands