1. The Associated Press. Five billion-dollar disasters were recorded in 2005. 2006. Available at: http://www.usatoday.com/weather/news/2006-01-27-billion-dollar-disasters_x.htm?csp=34. Accessed July 19, 2006.
2. Infection control practitioners' perceptions and educational needs regarding bioterrorism: results from a national needs assessment survey;Shadel;Am J Infect Control,2003
3. Dunham RB. Nominal group technique: a user's guide. Available at: http://instruction.bus.wisc.edu/obdemo/readings/ngt.html. Accessed October 11, 2005.
4. Grudens-Schuck N, Allen BL, Larson K. Focus group fundamentals. Available at: http://www.extension.iastate.edu/Publications/PM1969B.pdf-search=‘focus%20group%20method’. Accessed October 11, 2005.