1. Department of Biomedical Data Sciences, Medical Decision Making, Leiden University Medical Center, Albinusdreef 2, 2333 ZA Leiden, The Netherlands
2. Department of Orthopedic Surgery, Leiden University Medical Center, Albinusdreef 2, 2333 ZA Leiden, The Netherlands
3. Orthopedic Surgery, Ghent University Hospital, Corneel Heymanslaan 10, 9000 Gent, Belgium