1. Department of Health Sciences; Institute of Health and Society; University of Oslo; Oslo Norway
2. Center for Health; Activity and Rehabilitation Research; School of Physiotherapy; University of Otago; Dunedin New Zealand
3. Department of Preventive and Social Medicine; Dunedin School of Medicine; University of Otago; Dunedin New Zealand
4. School of Human; Health & Social Sciences; Central Queensland University; Branyan Australia
5. The Florey Institute of Neuroscience and Mental Health - Melbourne Brain Centre; University of Melbourne; Heidelberg Victoria Australia