1. Department of Neurology, Concord Hospital, Sydney, NSW.
2. Department of Neurology, Westmead Hospital, Sydney, NSW.
3. Sydney Medical School, University of Sydney, Sydney, NSW.
4. Department of Neurology, Royal Adelaide Hospital, Adelaide, SA.
5. Department of Neurology, Royal Brisbane and Women's Hospital, Brisbane, QLD.
6. School of Medicine, University of Queensland, Brisbane, QLD.