1. University of Otago; Rehabilitation Teaching and Research Unit, Department of Medicine; Mein St, Newtown PO Box 7343 Wellington New Zealand 6242
2. University of Exeter; University of Exeter Medical School; Veysey Building Salmon Pool Lane Exeter Devon UK EX2 4SG
3. Auckland University of Technology; School of Rehabilitation and Occupation Studies; Private Bag 92006 Auckland New Zealand 1020
4. Auckland University of Technology; School of Public Health and Psychosocial Studies; Auckland New Zealand