1. Department of Nutrition Sciences, University of Alabama at Birmingham, Birmingham;
2. Department of Biostatistics, University of Alabama at Birmingham, Birmingham, Alabama;
3. School of Biological and Medical Sciences, Rochester Institute of Technology, Rochester, New York;
4. Department of Statistics, Kansas State University, Manhattan, Kansas; and
5. Molecular Medicine Laboratories, Roche, Nutley, New Jersey
6. Birmingham Veterans Affairs Medical Center, Birmingham; and