1 Anna C. Singleton, PhD, and Rebecca Raeside, MPH, Faculty of Medicine and Health, School of Health Sciences, The University of Sydney, New South Wales, Australia; Karice K. Hyun, PhD, Faculty of Medicine and Health, School of Health Sciences, The University of Sydney, New South Wales, Australia, Department of Cardiology, Concord Repatriation General Hospital, ANZAC Research Institute, New South Wales, Australia; Stephanie R. Partridge, PhD, Faculty of Medicine and Health, School of Health Sciences, The University of Sydney, New South Wales, Australia, Prevention Research Collaboration, Charles Perkins Center, The University of Sydney, New South Wales, Australia; Gian Luca Di Tanna, PhD, The George Institute for Global Health, University of NSW, New South Wales, Australia; Nashid Hafiz, MIPH, Qiang Tu, PhD, Justin Tat-Ko, BMSc, and Stephanie Che Mun Sum, BMSc, PhD, Faculty of Medicine and Health, School of Health Sciences, The University of Sydney, New South Wales, Australia; Kerry A. Sherman, PhD, Department of Psychology, Center for Emotional Health, Macquarie University, New South Wales, Australia; Elisabeth Elder, PhD, Westmead Breast Cancer Institute, Westmead Hospital, New South Wales, Australia; and Julie Redfern, PhD, Faculty of Medicine and Health, School of Health Sciences, The University of Sydney, New South Wales, Australia, The George Institute for Global Health, University of NSW, New South Wales, Australia.