[1] Princess Margaret Canc Ctr, Toronto, ON, Canada
[2] British Columbia Canc Agcy, Vancouver, BC, Canada
[3] Univ Toronto, Ctr Addict & Mental Hlth, Toronto, ON, Canada
[4] Univ Toronto, Toronto, ON M5S 1A1, Canada
[5] Vancouver Gen Hosp, Vancouver, BC, Canada
[6] Inst Univ Cardiol & Pneumol Quebec, Quebec City, PQ, Canada
[7] McMaster Univ, Hamilton, ON L8S 4L8, Canada
[8] Juravinski Hosp & Canc Ctr, Hamilton, ON, Canada
[9] Dalhousie Univ, Halifax, NS B3H 3J5, Canada
[10] Ottawa Hosp Ctr, Hamilton, ON, Canada
[11] Univ Calgary, Calgary, AB T2N 1N4, Canada
[12] Mem Univ, St John, NF, Canada
[13] Brock Univ, St Catharines, ON L2S 3A1, Canada