Elizabeth Platz, ScD, MPH, is Martin D. Abeloff, MD Scholar in Cancer Prevention, Professor, Department of Epidemiology, Johns Hopkins University School of Medicine.Nathan A. Berger, MD, is Hanna-Payne Professor of Experimental Medicine, Professor, Medicine, Biochemistry, Genetics, and Oncology, Director, Center for Science, Health and Society, Case Western Reserve University School of Medicine.