Silver Book Fact
Approximately 880,300 of the 11 million cancer survivors living in the US as of January 1, 2005, had been diagnosed with more than one cancer.
American Cancer Society. Cancer Facts and Figures 2009. Atlanta, GA: American Cancer Society; May 2009. https://www.cancer.org/research/cancer-facts-statistics/all-cancer-facts-figures/cancer-facts-figures-2009.html