[1] Vancouver Canc Ctr, BC Canc, Vancouver, BC, Canada
[2] Queens Univ, Dept Publ Hlth Sci, Kingston, ON, Canada
[3] Queens Univ, Canadian Canc Trials Grp, Kingston, ON, Canada
[4] Univ Ottawa, Ottawa Hosp Canc Ctr, Ottawa, ON, Canada
[5] Ottawa Hosp Canc Ctr, Ottawa, ON, Canada
[6] Univ Adelaide, Queen Elizabeth Hosp, Woodville, SA, Australia
[7] Monash Univ, Sch Publ Hlth & Prevent Med, Melbourne, Vic, Australia
[8] Alfred Hlth, Dept Med Oncol, Melbourne, Vic, Australia
[9] Princess Margaret Canc Ctr, Toronto, ON, Canada
[10] Flinders Med Ctr, Adelaide, SA, Australia
[11] Princess Margaret Univ Hlth Network, Toronto, ON, Canada
[12] Cabrini Hosp, Malvern, Vic, Australia
[13] Univ Sydney, Camperdown, NSW, Australia
[14] Vancouver Canc Ctr, BCCA, Vancouver, BC, Canada