Dr Leong has almost 30 years experience in the management of childhood growth and endocrine disorders and children and adolescents with Type 1 and 2 Diabetes. He received his paediatric and endocrine training at the Prince of Wales Children’s Hospital, Randwick (now the Sydney Children’s Hospital) and the former Royal Alexandra Hospital for Children’s Hospital, Camperdown, before undergoing 3 years of clinical and research training in paediatric endocrinology at the National Institutes of Health in the USA. He also has a PhD in Molecular Endocrinology and Vitamin D action from the Garvan Institute, UNSW. He left the Lady Cilento Children’s Hospital in Brisbane in April 2017 where he had been working the last 13 years as a Senior Staff Specialist in Paediatric Endocrinology and Diabetes and as a Senior Research Fellow in the Institute for Molecular Bioscience at The University of Queensland.