1. From the Neurology Department (B.S., M.T.M.) and Haematology Department (P.T.M., F.N.), Royal Children’s Hospital, Victoria, Australia; Murdoch Childrens Research Institute, Victoria, Australia (B.S., P.T.M., F.N., M.T.M.); Florey Neurosciences Institute, Victoria, Australia (L.C., M.T.M.); Department of Paediatrics, University of Melbourne, Victoria, Australia (P.T.M., F.N., M.T.M.); La Trobe University, Victoria, Australia (I.M.); and Ambulance Victoria, Australia (G.H.).