[1] Yale Sch Med, Dept Pediat, 330 Cedar St,LMP 2082C, New Haven, CT 06510 USA
[2] Yale Canc Outcomes, Publ Policy & Effectiveness Res Ctr, New Haven, CT USA
[3] Kaiser Permanente Washington Hlth Res Inst, Seattle, WA USA
[4] Yale Univ, New Haven, CT USA
[5] UCL, London, England
[6] Natl Patient Advocate Fdn, Washington, DC USA
[7] Yale Sch Publ Hlth, Dept Chron Dis Epidemiol, New Haven, CT USA
[8] Yale Sch Med, Dept Internal Med, New Haven, CT USA
[9] Univ Penn, Sch Nursing, Dept Family & Community Hlth, Philadelphia, PA 19104 USA
[10] Childrens Hosp Philadelphia, Justin Michael Ingerman Ctr Palliat Care, Philadelphia, PA 19104 USA
[11] Univ Penn, Dept Pediat, Perelman Sch Med, Philadelphia, PA 19104 USA
[12] Univ Penn, Dept Med Eth, Perelman Sch Med, Philadelphia, PA 19104 USA
[13] Univ Penn, Dept Hlth Policy, Perelman Sch Med, Philadelphia, PA 19104 USA
[14] Harvard Med Sch, Massachusetts Gen Hosp, Dept Pediat, Boston, MA 02115 USA