Sperduto_Khan's Treatment Planning in Radiation Oncology, 5e

To Teddi Dawn, my sister who had Down Syndrome, who inspired my interest in science and sadly died from COVID-19 during the writing of this book. I am forever grateful for your joy and mischief and forever saddened that I could not be with you or help you understand. —Paul W. Sperduto

To my children Valerie, Britton, Jay, Madison, Jack, and Vivienne who have brought much joy to my life —John P. Gibbons

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