1 Department of Neurology & Medicine, AIMSS, Melbourne Medical School, Western Health, St Albans, VIC, Australia. Electronic address: tissa.wijeratne@wh.org.au.
2 Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, Vienna, Austria.
3 Multiple Sclerosis International Federation, London, UK.
4 Department of Neurology, Sir Charles Gairdner Hospital, Perth, WA, Australia.