1. Department of Orthopaedics, Reinier de Graaf Groep, Delft, The Netherlands.
2. Bislife, Leiden, The Netherlands.
3. Department of Orthopaedics, Radboud University Medical Center, Nijmegen, The Netherlands.
4. Department of Medical Microbiology, Laurentius Hospital Roermond, The Netherlands.
5. Department of Medical Microbiology, Vlietland Hospital, Schiedam, The Netherlands.