1. University of Colorado School of Medicine; Aurora Colorado USA
2. Department of Psychology; University of Minnesota; Minneapolis Minnesota USA
3. National Heart, Lung, and Blood Institute; National Institutes of Health, Bethesda Maryland USA
4. National Cancer Institute; National Institutes of Health, Rockville Maryland USA
5. University of Pittsburgh Medical Center; Pittsburgh Pennsylvania USA
6. Pennington Biomedical Research Center; Louisiana State University; Baton Rouge Louisiana USA