1. University of Otago; Christchurch New Zealand
2. New Zealand Brain Research Institute; Christchurch New Zealand
3. Neurology Department; Christchurch Public Hospital; Christchurch New Zealand
4. School of Health Sciences; University of Canterbury; Christchurch New Zealand
5. Queen Square Multiple Sclerosis Centre; UCL Institute of Neurology; London UK
6. School of Geographical Sciences; University of Bristol; Bristol UK
7. University of Otago; Wellington New Zealand
8. Neurology Department; Auckland City Hospital; Auckland New Zealand
9. Menzies Institute for Medical Research; University of Tasmania; Hobart Australia