MD, FRACP, FRCP, FRCP, FAHA, FAAN, Professor, School of Psychology and Public Health, La Trobe University, Vic; Director and Chair, Department of Neurology and Stroke Services, Western Health & University Melbourne, AIMSS, WHCRE, Sunshine Hospital, Vic; Professor, Department of Medicine, Faculty of Medicine, University of Rajarata, Saliyapura, Anuradhapura, LK