1. Cancer Biology Program, Fox Chase Cancer Center, Philadelphia, Pennsylvania 19111, USA
2. Department of Microbiology and Immunology, Sol Sherry Thrombosis Research Center, Temple University, Philadelphia, Pennsylvania 19104, USA
3. Afraxis Inc., La Jolla, California 92037, USA
4. Department of Translational Oncology, Genentech, South San Francisco, California 94080, USA
5. Center for Childhood Cancer, The Research Institute at Nationwide Children's Hospital, The Ohio State University College of Medicine, Columbus, Ohio 43205, USA
6. Department of Pediatrics, The Ohio State University College of Medicine, Columbus, Ohio 43205, USA
7. Department of Otolaryngology, The Ohio State University College of Medicine, Columbus, Ohio 43205, USA