1. Department of Operating Rooms, Radboud Institute for Health Sciences, Radboud University Medical Center, Nijmegen, the Netherlands
2. Radboud University Medical Center, Radboud Institute for Health Sciences, Department of Health Evidence, Nijmegen, the Netherlands
3. Laurentius Hospital, Roermond, The Netherlands.
4. ATRO Medical BV, Department of Orthopedics, Radboud Institute for Health Sciences, Radboud University Medical Center, Nijmegen, the Netherlands