[1] Univ Vermont, Dept Nursing, Burlington, VT USA
[2] Dana Farber Canc Inst, Dept Psychosocial Oncol & Palliat Care, Boston, MA USA
[3] Brigham & Womens Hosp, Div Palliat Med, Boston, MA USA
[4] Dana Farber Canc Inst, Dept Informat & Analyt, Boston, MA USA
[5] Harvard Univ, Harvard Med Sch, Boston, MA USA
[6] Univ Vermont, Dept Nursing, 106 Carrigan Dr, Burlington, VT 05405 USA