1. UNSW Medicine & Health, School of Clinical Medicine, UNSW Sydney, Sydney 1466, Australia
2. Western Sydney Youth Cancer Service, Westmead Hospital, Sydney 2145, Australia
3. Sydney Medical School, Faculty of Medicine and Health, University of Sydney, Sydney 2006, Australia
4. Concord Cancer Centre, Concord Repatriation General Hospital, Sydney 2139, Australia
5. Psycho-Oncology Cooperative Research Group, School of Psychology, Faculty of Science, University of Sydney, Sydney 2006, Australia