Author information:
(1)Division of Hematology/Oncology, Children's Hospital Boston, Boston, MA 
02115, USA; Department of Pediatrics and the Human Oncology and Pathogenesis 
Program, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA.
(2)Department of Pediatrics and the Human Oncology and Pathogenesis Program, 
Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA.
(3)Division of Hematology/Oncology, Children's Hospital Boston, Boston, MA 
02115, USA.
(4)Laboratory of Biochemistry and Molecular Biology, The Rockefeller University, 
New York, NY 10065, USA.
(5)Molecular Pharmacology and Chemistry Program, Memorial Sloan Kettering Cancer 
Center, New York, NY 10065, USA.
(6)Department of Medical Oncology, Dana Farber Cancer Institute, Harvard Medical 
School, Boston, MA 02115, USA.
(7)Department of Pediatrics, University of Colorado Anshutz Medical Campus, 
Aurora, CO 80045 USA.
(8)Division of Hematology/Oncology, Children's Hospital Boston, Boston, MA 
02115, USA; Department of Pediatrics and the Human Oncology and Pathogenesis 
Program, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA. 
Electronic address: armstros@mskcc.org.