1. 1Division of Hematology/Oncology, Department of Internal Medicine, University of California Davis School of Medicine, University of California Davis Comprehensive Cancer Center, Sacramento, California.
2. 2Medical Service, Veterans Affairs Northern California Health Care System, Mather, California.
3. 3Department of Biochemistry and Molecular Medicine, University of California Davis, Sacramento, California.
4. 4Department of Pathology and Laboratory Medicine, University of California Davis School of Medicine, Sacramento, California.
5. 5Division of Pulmonary, Critical Care, and Sleep Medicine, Department of Internal Medicine, University of California Davis School of Medicine, UC Davis Lung Center, Sacramento, California.