1. The University of Queensland, Brisbane; Queensland Australia
2. The University of Melbourne, Parkville; Victoria Australia
3. Boston University; Boston Massachusetts
4. Monash University, Melbourne; Victoria Australia
5. Aspetar Orthopaedic and Sports Medicine Hospital, Doha, Qatar, University of British Columbia, Vancouver, British Columbia, Canada, and Centre for Hip Health and Mobility and Vancouver Hospital, Vancouver; British Columbia Canada
6. Erasmus MC, University Medical Centre Rotterdam; Rotterdam The Netherlands