[1] Univ Washington, Seattle Childrens Hosp, Div Pediat Hematol Oncol, Seattle, WA 98195 USA
[2] Univ Washington, Fred Hutchinson Canc Res Ctr, Seattle, WA 98195 USA
[3] Univ Washington, Seattle, WA 98195 USA
[4] Harvard Univ, Sch Med, Dana Farber Canc Inst, Dept Psychosocial Oncol & Palliat Care, Boston, MA 02115 USA
[5] Harvard Univ, Sch Med, Dana Farber Canc Inst, Ctr Outcomes & Policy Res, Boston, MA 02115 USA
[6] Boston Childrens Hosp, Dept Med, Boston, MA USA
[7] Inst Clin Effectiveness & Hlth Policy, Buenos Aires, DF, Argentina
[8] Childrens Hosp Philadelphia, Philadelphia, PA 19104 USA
[9] Ohio State Univ, Columbus, OH 43210 USA
[10] Nationwide Childrens Hosp, Res Inst, Columbus, OH USA