1. Cochrane Musculoskeletal Group; University of Ottawa; Ottawa Canada
2. Support Unit for Research Evidence; Cardiff University; Cardiff Wales
3. Evidence for Policy and Practice Information and Co-ordinating Centre (EPPI-Centre), Social Science Research Unit, Institute of Education; University of London; London UK
4. Peninsula Technology Assessment Group (PenTAG), Peninsula College of Medicine and Dentistry; University of Exeter; Exeter UK
5. Children's Hospital of Eastern Ontario Research Institute; Ottawa Canada