Professor Katrina Williams is a paediatrician, public health physician and an internationally recognized clinical epidemiologist. She is the APEX Australia Chair of Developmental Medicine at the University of Melbourne and the Director of the Department of Developmental Medicine at the Royal Children’s Hospital, Melbourne. Her current research focus is on autism, and she is a founding member and executive committee member of the Australasian Society for Autism Research. Professor Jacqueline Roberts is the chair of autism in the Autism Centre of Excellence, an initiative of Griffith University. Prior to this, Jacqui worked as a consultant on a variety of national projects in autism. She has a background in teaching and in speech pathology and previously worked in schools for children with autism as a teacher and principal.