1 Department of Orthopaedic Surgery, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands.
2 Department of Infectious Diseases, University of Barcelona, IDIBAPS, Hospital Clinic of Barcelona, Barcelona, Spain.
3 Department of Orthopaedic Surgery, Medical Center Leeuwarden, Leeuwarden, the Netherlands.
4 Department of Orthopaedic Surgery, Martini Hospital, Groningen, the Netherlands.
5 Department of Orthopaedic Surgery, Centro Hospitalar do Porto, Porto, Portugal.
6 Department of Orthopaedic Surgery, Rothman Institute at Thomas Jefferson University Hospital, Philadelphia, USA.
7 Department of Infectious Diseases, Sydney Kimmel Medical College at Thomas Jefferson University Hospital, Philadelphia, USA.
8 Department of Medical Microbiology and Infection Prevention, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands.