1. Falls, Balance and Injury Research Centre, Neuroscience Research Australia , Sydney , Australia
2. School of Population Health, University of New South Wales , Sydney , Australia
3. School of Medical Sciences, University of New South Wales , Sydney , Australia
4. Department of Psychology, University of Regina , Canada
5. School of Nursing, Faculty of Science, Medicine and Health, University of Wollongong , Australia
6. Care and Public Health Research Institute, Department of Health Services Research, Maastricht University , Maastricht , The Netherlands
7. Public Health Service Flevoland (GGD Flevoland), Department of Health Policy and Research , Lelystad , The Netherlands