1. Centre for Medical Research, University of Western Australia, Nedlands, WA, Australia
2. Department of Work and Organizational Psychology, Institute for Psychology, University of Berne, Berne, Switzerland
3. Sansom Institute for Health Research, University of South Australia, Adelaide, SA, Australia
4. Neuroscience Research Australia, Sydney, NSW, Australia
5. Department of Orthopaedic Surgery, Asklepios Klinikum Uckermark, Schwedt/Oder, Germany
6. Institute for Evaluative Research in Orthopaedic Surgery, MEM Research Center, University of Berne, Berne, Switzerland
7. Centre for Musculoskeletal Outcomes Research, Dunedin School of Medicine, University of Otago, Dunedin, New Zealand