1. National Cancer Institute Surveillance, Epidemiology, and End results (SEER) program http://seer.cancer.gov/csr/1975_2012/
2. National Cancer information center Cancer statistics in Korea: incidence, mortality, survival, and prevalence in 2012 http://www.cancer.go.kr/mbs/cancer/subview.jsp?id=cancer_040301000000
3. American Cancer Society Surveillance and health services research http://www.cancer.org/research/acsresearchers/about-surveillance-and-health-services-research
4. Mental and physical health-related quality of life among U.S. cancer survivors: population estimates from the 2010 National Health Interview Survey;Weaver;Cancer Epidemiol Biomarkers Prev,2012
5. Cancer survivors in the United States: prevalence across the survivorship trajectory and implications for care;Moor;Cancer Epidemiol Biomarkers Prev,2013