1. Institute of Hematology and Center for Hemato-Oncology Research, University and Hospital of Perugia, Perugia, Italy;
2. Departments of Systems Biology and Biomedical Informatics, Columbia University, New York, NY;
3. Institute for Cancer Genetics and the Department of Pathology and Cell Biology, Columbia University, New York, NY;
4. Medical Oncology and
5. Anatomic Pathology, National Cancer Institute, Milan, Italy