¹ Cancer Prevention Fellowship Program, Office of Preventive Oncology, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20852, USA

² Department of Nutrition, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA

³ Department of Epidemiology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA

⁴ Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA

⁵ Center for Gastrointestinal Biology and Disease, Division of Digestive Diseases and Nutrition, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA