1. Department of Medical Physics; Memorial Sloan-Kettering Cancer Center; New York NY 10065 USA
2. Grove City College; Grove City PA 16127 USA
3. Department of Pathology; Memorial Sloan-Kettering Cancer Center; New York NY 10065 USA
4. Department of Radiology; Hospital of the University of Pennsylvania; Philadelphia PA 19104 USA
5. Department of Radiology; Memorial Sloan-Kettering Cancer Center; New York NY 10065 USA
6. Molecular Cytology Core Facility; Memorial Sloan-Kettering Cancer Center; New York NY 10065 USA