1. Discipline of Paediatrics and Child Health, UNSW Medicine and Health, UNSW , Sydney, NSW 2052 , Australia
2. Department of Neurology, Sydney Children’s Hospital Network , Sydney, NSW 2031 , Australia
3. Brain and Mind Centre, University of Sydney , Sydney, NSW 2050 , Australia
4. Department of Neurology, Royal Prince Alfred Hospital , Sydney, NSW 2050 , Australia