1. Medicine (S.L., L.Y, J.V.B., R.L., P.B.), Montreal Quebec, Canada H3A 1A1
2. Departments of Surgery (D.Z., N.W., E.R.L., P.B.), Montreal Quebec, Canada H3A 1A1
3. McGill University Health Center, the Royal Victoria Hospital, The Terry Fox Molecular Oncology Group, Lady Davis Institute for Medical Research (L.Y., R.L.), Montreal Quebec, Canada H3A 1A1
4. the Shriners Hospital for Children (E.R.L.), McGill University, Montreal Quebec, Canada H3A 1A1
5. Georgetown University School of Medicine, and Lombardi Comprehensive Cancer Center (R.I.G.), Washington, D.C. 20007