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For the image of lung cancer cells, we thank Levi J. Beverly, PhD, associate professor and co-leader of the Experimental Therapeutics Program, James Graham Brown Cancer Center, Department of Medicine, University of Louisville.
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For his help with the bibliography, we also thank John Chenault, PhD, associate professor and medical librarian, Kornhauser Health Sciences Library, University of Louisville.
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Goetz Kloecker, MD, MBA, MSPH, FACP
Susanne Markesbery Arnold, MD
Mostafa M. Fraig, MD, MBA
Cesar A. Perez, MD