1. Laboratory of Metabolism, Center
for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892, United
States
2. Molecular Biology
of Selenium
Section, Laboratory of Cancer Prevention, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892,
United States
3. Helmholtz Zentrum
München, Institute of Developmental Genetics, Ingolstädter
Landstr. 1, 85764 Neuherberg, Germany
4. Department of Food Science and
Nutrition, University of Minnesota, Twin
Cities, St. Paul, Minnesota 55108, United States