1. a Laboratory of Cancer Prevention, Center for Cancer Research , National Cancer Institute—Frederick , Frederick, Maryland, USA
2. b Cancer Prevention Fellowship Program, Office of Preventive Oncology, Division of Cancer Prevention , National Cancer Institute, National Institutes of Health , Bethesda, Maryland, USA
3. c Department of Food Science and Human Nutrition , Michigan State University , East Lansing, Michigan, USA
4. d Cancer Prevention Fellowship Program, Office of Preventive Oncology , National Cancer Institute, National Institutes of Health , Bethesda, Maryland, USA
5. e Center for Cancer Research , National Cancer Institute, National Institutes of Health , Bethesda, Maryland, USA
6. f Biometric Research Branch, Division of Cancer Treatment and Diagnosis , National Cancer Institute, National Institutes of Health , Bethesda, Maryland, USA