1. University of Alberta; Glen Sather Sports Medicine Clinic, Faculty of Rehabilitation Medicine; 2C/2D Kaye Edmonton Clinic Edmonton AB Canada T6G 1Z1
2. Sydney Medical School, The University of Sydney; Musculoskeletal Division, The George Institute for Global Health; Sydney Australia
3. Universidade Cidade de São Paulo; Masters and Doctoral Programs in Physical Therapy; Rua Cesário Galeno 448 São Paulo Brazil 03071-000
4. VU University Amsterdam; Department of Health Sciences, EMGO+ Institute for Health and Care Research; PO Box 7057 Amsterdam Netherlands 1007 MB