Varney, Lt. Col., USAF, MC, Shawn, Jon Mark Hirshon, MD, MPH, Patricia Dischinger, PhD, and Colin Mackenzie, MD. 2006. “Extending Injury Prevention Methodology to Chemical Terrorism Preparedness: The Haddon Matrix and Sarin”. American Journal of Disaster Medicine 1 (1):18-27. https://doi.org/10.5055/ajdm.2006.0006.