Varney, Lt. Col., USAF, MC, S., Hirshon, MD, MPH, J. M., Dischinger, PhD, P. and Mackenzie, MD, C. (2006) “Extending injury prevention methodology to chemical terrorism preparedness: The Haddon Matrix and sarin”, American Journal of Disaster Medicine, 1(1), pp. 18–27. doi: 10.5055/ajdm.2006.0006.