1. Clayton
Foundation Laboratories for Peptide Biology, Salk Institute for Biological Studies, La Jolla, California 92037, United States
2. Department
of Pediatric Oncology, Dana-Farber Cancer Institute and Boston Children’s
Hospital, Harvard Medical School, Boston, Massachusetts 02215, United States
3. Linde
Program in Cancer Chemical Biology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts, United States