1 Faculty of Medicine and Health, The University of New South Wales, Sydney, New South Wales, Australia.
2 Kids Neuroscience Centre, The Children's Hospital at Westmead, Faculty of Medicine and Health, The University of Sydney, Sydney, New South Wales, Australia.
3 TY Nelson Department of Neurology and Neurosurgery, The Children's Hospital at Westmead, The University of Sydney, Sydney, New South Wales, Australia.
4 Department of Dermatology, Liverpool Hospital, Liverpool, New South Wales, Australia.