[1] Brigham & Womens Hosp, Boston, MA 02115 USA
[2] Univ Alberta, Edmonton, AB, Canada
[3] Dana Farber Canc Inst, Boston, MA 02115 USA
[4] Harvard Univ, Sch Med, Boston, MA USA
[5] UCSF Sch Med, Dept Pediat, Greenbrae, CA USA
[6] Fred Hutchinson Canc Res Ctr, Seattle, WA 98104 USA
[7] Mem Sloan Kettering Canc Ctr, New York, NY 10021 USA
[8] St Jude Childrens Res Hosp, Memphis, TN 38105 USA
[9] Univ Texas MD Anderson Canc Ctr, Dept Radiat Phys, Houston, TX 77030 USA
[10] Boston Childrens Hosp, Dept Surg, Boston, MA USA