[1] Univ Sydney, Sch Psychol, Ctr Med Psychol Evidence Based Decis Making, Fac Sci, Camperdown, NSW, Australia
[2] Univ Sydney, Sydney Sch Publ Hlth, Sydney, NSW, Australia
[3] RPA Inst Acad Surg, Sydney Local Hlth Dist, Sydney, NSW, Australia
[4] Surg Outcomes Res Ctr, Sydney, NSW, Australia
[5] Univ Sydney, Fac Med & Hlth, Sydney, NSW, Australia
[6] Chris Brien Lifehouse, Dept Med Oncol, Sydney, NSW, Australia
[7] Australian Natl Univ, Res Sch Populat Hlth, Natl Ctr Epidemiol & Populat Hlth, Canberra, ACT, Australia