1. Department of Paediatrics, Nepean Hospital, Penrith, NSW, Australia
2. Department of Paediatrics, Nepean Hospital, Penrith, NSW, Australia; and Sydney Medical School Nepean, Discipline of Paediatrics, The University of Sydney, Sydney, NSW, Australia; Faculty of Medicine, University of Notre Dame Australia, Sydney, Australia
3. Midtown Medical Clinic General Practice, Melbourne, VIC, Australia; Beach Street Family Practice, Woolgoolga, NSW, Australia
4. UNSW Australia Rural Clinical School, Coffs Harbour, NSW, Australia; Beach Street Family Practice, Woolgoolga, NSW, Australia
5. Department of Paediatrics, Nepean Hospital, Penrith, NSW, Australia; Sydney Medical School Nepean, Discipline of Paediatrics, The University of Sydney, Sydney, NSW, Australia; and Brain Mind Centre Nepean, The University of Sydney, Penrith, NSW, Australia