1. World Health Organization. Are the number of cases increasing or decreasing in the world? http://www.who.int/features/qa/15/en. Accessed October 12, 2013.
2. Swartz K. Projected costs of chronic diseases. Health Care Cost Monitor. Published January 22, 2010. http://healthcarecostmonitor.thehastingscenter.org/kimberlyswartz/projected-costs-of-chronic-diseases/. Accessed September 4, 2013.
3. The economic pressures for biosimilar drug use in cancer medicine;Cornes;Target Oncol,2012
4. National Cancer Institute. Seer stat fact sheets: all cancer sites. http://seer.cancer.gov/statfacts/html/all.html. Accessed October 17, 2013.
5. Mulcahy N. Time to consider cost in evaluating cancer drugs in United States? Medscape Medical News. Published July 14, 2009. http://www.medscape.com/viewarticle/705689. Accessed September 4, 2013.