1. Leuven Institute for Healthcare Policy, KU Leuven, University of Leuven , Kapucijnenvoer 35, 3rd floor, box 3001, Leuven, Vlaams-Brabant 3000, Belgium
2. Department of Orthopaedics, University Hospitals Leuven , Herestraat 49, Leuven, Vlaams-Brabant 3000, Belgium
3. Department of Quality, University Hospitals Leuven , Herestraat 49, Leuven, Vlaams-Brabant 3000, Belgium
4. Department of Primary Care and Public Health, UGent and Strategic Policy Unit, Ghent University Hospital , Corneel Heymanslaan 10, Ghent, Oost-Vlaanderen 9000, Belgium
5. Financial Department, University Hospitals Leuven , Herestraat 49, Leuven, Vlaams-Brabant 3000, Belgium