632 Incidence and prevalence of NMOSD in Australia and New Zealand W Bukhari, K M Prain, P Waters, M Woodhall, C M O’Gorman, L Clarke, R A Silvestrini, C S Bundell, D Abernethy, S Bhuta, S Blum, M Boggild, K Boundy, B J Brew, M Brown, W J Brownlee, H Butzkueven, W M Carroll, C Chen, A Coulthard, R C Dale, C Das, K Dear, M J Fabis-Pedrini, D Fulcher, D Gillis, S Hawke, R Heard, A P D Henderson, ...