[1] Dana Farber Canc Inst, Dept Pediat Oncol, Div Populat Sci, McGraw Patterson Ctr Outcomes & Policy Res, Boston, MA 02115 USA
[2] Dana Farber Canc Inst, Dept Psychosocial Oncol & Palliat Care, Boston, MA 02115 USA
[3] Boston Childrens Hosp, Div Hematol & Oncol, Boston, MA USA
[4] Brigham & Womens Hosp, Dept Psychiat, 75 Francis St, Boston, MA 02115 USA
[5] Brigham & Womens Hosp, Dept Med, 75 Francis St, Boston, MA 02115 USA