1. National Comprehensive Center Network. Colon cancer, version 3. 2012. www.nccn.org/professionals/physician_gls/pdf/colon.pdf (accessed 2012 Feb 23).
2. Impact of drug shortages on U.S. health systems;Kaakeh;Am J Health-Syst Pharm.,2011
3. Cherici
C
Frazier
J
Feldman
M
. Navigating drug shortages in American health-care: a Premier healthcare alliance analysis, March2011. https://premierinc.com/about/news/11-mar/drug-shortage-white-paper-3-28-11.pdf (accessed 2012 Mar 3).
4. Institute for Safe Medication Practices. Drug shortages: national survey reveals high level of frustration, low level of safety. www.ismp.org/newsletters/acutecare/articles/20100923.asp (accessed 2012 Feb 1).
5. Food and Drug Administration. FDA acts to bolster supply of critically needed cancer drugs. www.fda.gov/NewsEvents/Newsroom/PressAnnouncements/UCM292658.htm (accessed 2012 May 14).