[1] Univ Washington, Div Hematol Oncol, Dept Pediat, Sch Med, Seattle, WA 98195 USA
[2] Seattle Childrens Res Inst, Palliat Care & Resilience Program, Seattle, WA USA
[3] Univ Washington, Sch Med, Dept Pediat, Div Rheumatol, Seattle, WA 98195 USA
[4] Univ Washington, Sch Publ Hlth, Dept Hlth Syst & Populat Hlth, Seattle, WA 98195 USA
[5] Univ Washington, Sch Publ Hlth, Dept Epidemiol, Seattle, WA 98195 USA
[6] Univ Washington, Sch Pharm, CHOICE Inst, Hlth Econ & Outcomes Res, Seattle, WA 98195 USA
[7] Seattle Childrens Res Inst, Core Biostat Epidemiol & Analyt Res, Seattle, WA USA
[8] Fred Hutchinson Canc Ctr, Publ Hlth Sci Div, Seattle, WA USA