[1] Univ Sydney, Cte Med Psychol & Evidence Based Decis Making CeM, Sydney, NSW, Australia
[2] Univ Sydney, Fac Med & Hlth, Sydney Sch Publ Hlth, Sydney, NSW, Australia
[3] RPA Inst Acad Surg, Sydney Local Hlth Dist, Sydney, NSW, Australia
[4] Surg Outcomes Res Ctr SOuRCe, Sydney Local Hlth Dist, Sydney, NSW, Australia
[5] Univ Sydney, Cent Clin Sch, Fac Med & Hlth, Sydney, NSW, Australia
[6] RPA, Dept Colorectal Surg, Sydney Local Hlth Dist, Sydney, NSW, Australia
[7] Concord Repatriat Gen Hosp, Concord Canc Ctr, Sydney Local Hlth Dist, Sydney, NSW, Australia
[8] Flinders Med Ctr, Dept Med Oncol, Adelaide, SA, Australia
[9] Nat Breast Canc Fdn, Sydney, NSW, Australia