[1] Laval Univ, Res Ctr, CHU Quebec, Oncol Div, Quebec City, PQ, Canada
[2] Laval Univ, Fac Pharm, Quebec City, PQ, Canada
[3] Laval Univ, Canc Res Ctr, Quebec City, PQ, Canada
[4] McGill Univ, Ctr Genom & Policy, Montreal, PQ, Canada
[5] Laval Univ, Fac Med, Quebec City, PQ, Canada
[6] Assoc Quebecoise Soins Palliatifs, Granby, PQ, Canada
[7] Sherbrooke Univ, Fac Med & Hlth Sci, Sherbrooke, PQ, Canada
[8] Laval Univ, CHU Quebec, Quebec City, PQ, Canada
[9] CISSS Chaudiere Appalaches Res Ctr, Levis, PQ, Canada
[10] Jewish Gen Hosp, Palliat Care Unit, Montreal, PQ, Canada
[11] French Natl Inst Hlth, Villejuif, France
[12] INSERM, U1018, Med Res Inst, Epidemiol & Populat Hlth Res Ctr, Villejuif, France