[1] Univ New Brunswick, Fac Nursing, Fredericton, NB E3B 5A3, Canada
[2] Princess Margaret Canc Ctr, Dept Psychosocial Oncol, Toronto, ON, Canada
[3] Princess Margaret Canc Ctr, Dept Palliat Care, Toronto, ON, Canada
[4] Hosp Sick Children, Dept Pediat, Toronto, ON M5G 1X8, Canada
[5] Univ Toronto, Toronto, ON, Canada
[6] McMaster Univ, Dept Pediat, Hamilton, ON, Canada
[7] McMaster Univ, Dept Pathol, Hamilton, ON, Canada
[8] McMaster Univ, Dept Med, Hamilton, ON, Canada
[9] IWK Hlth Ctr, Dept Hematol Oncol, Halifax, NS, Canada