1. Metabolism Branch, Division of Cancer Treatment and Diagnosis, Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892, USA
2. Amnis Corporation, Seattle, WA 98121, USA.
3. Biometric Research Branch, Division of Cancer Treatment and Diagnosis, Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892, USA.
4. Department of Pathology, University of Würzburg, 97080 Würzburg, Germany.
5. Department of Clinical Pathology, Robert-Bosch-Krankenhaus, 70376 Stuttgart, Germany.