[1] Prince Wales Hosp, Dept Med Oncol, Psychosocial Res Grp, Randwick, NSW 2031, Australia
[2] Univ New S Wales, Sch Psychiat, Kensington, NSW 2033, Australia
[3] Univ Sydney, Sch Psychol, Med Psychol Res Unit, Sydney, NSW 2006, Australia
[4] Univ Sydney, Sch Publ Hlth, Sydney, NSW 2006, Australia
[5] Univ Sydney, Westmead Millennium Inst, Westmead Inst Canc Res, Westmead, NSW 2145, Australia