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.
For his help with the bibliography, we also thank John Chenault, PhD, associate professor and medical librarian, Kornhauser Health Sciences Library, University of Louisville.
Goetz Kloecker, MD, MBA, MSPH, FACP
Susanne Markesbery Arnold, MD
Mostafa M. Fraig, MD, MBA
Cesar A. Perez, MD