[1] Univ Malaya, Fac Med, Div Neurol, Kuala Lumpur, Malaysia
[2] Univ Malaya, Fac Med, Dept Mol Med, Kuala Lumpur, Malaysia
[3] Univ Sydney, Northcott Neurosci Lab, ANZAC Res Inst, Sydney, NSW 2006, Australia
[4] Univ Sydney, Sydney Med Sch, Sydney, NSW 2006, Australia
[5] Royal Childrens Hosp, Childrens Neurosci Ctr, Melbourne, Vic, Australia