1. Sydney Medical School, The University of Sydney; Rehabilitation Studies Unit, Northern Clinical School; PO Box 6 Ryde NSW Australia 1680
2. University of Teesside; Centre for Rehabilitation Sciences (CRS), Research Institute for Health Sciences and Social Care; School of Health and Social Care Middlesborough Tees Valley UK TS1 3BA
3. Royal North Shore Hospital of Sydney; Department of Aged Care and Rehabilitation Medicine; Building 12 St Leonards NSW Australia NSW 2065
4. University of Manchester; Cochrane Bone, Joint and Muscle Trauma Group; School of Translational Medicine 2nd Floor Stopford Building, Oxford Road Manchester UK M13 9PT
5. University of Glasgow; Academic Section of Geriatric Medicine; 3rd Floor, Centre Block Royal Infirmary Glasgow UK G4 0SF