Resources
http://www.raptiva.com/raptiva/index.jsp
http://www.rxlist.com/raptiva-drug.htm
http://www.webmd.com/skin-problems-and-treatments/psoriasis/news/20090219/psoriasis-drug-raptiva-tied-to-brain-infection
http://www.fda.gov/NewsEvents/Newsroom/PressAnnouncements/default.htm
http://www.drugs.com/raptiva.html
http://www.rarediseases.org
http://en.wikipedia.org/wiki/Progressive_multifocal_leukoencephalopathy

