1. Department of Orthopaedic Surgery, Nordsjaellands Hospital, University of Copenhagen, Hilleroed, Denmark.
2. Department of Orthopaedic Surgery, Tamworth Rural Referral Hospital, Tamworth, Australia.
3. Department of Orthopaedic Surgery, Zealand University Hospital and Department of Clinical Medicine, University of Copenhagen, Denmark.
4. Ingham Institute for Applied Medical Research, South Western Sydney Clinical School, University of New South Wales, Sydney, Australia.