1. Centre for Epidemiology Versus Arthritis Centre for Musculoskeletal Research, Division of Musculoskeletal and Dermatological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre Manchester UK
2. National Institute for Health Research Biomedical Research Centre Manchester University Hospital NHS Trust Manchester UK
3. Division of Developmental and Behavioral Health Children's Mercy Kansas City Kansas City Missouri USA
4. Center for Child Health, Behavior and Development Seattle Children's Research Institute Seattle Washington USA
5. Manchester Centre for Health Psychology Division of Psychology and Mental Health, University of Manchester Manchester UK
6. Royal Manchester Children's Hospital Manchester University Hospitals Trust Manchester UK