Alcohol and Motorcycle Accidents. http://www.texasmotorcycleaccident.com/article.asp?artid=52
Automobile & Motorcycle Accidents Information. 2007. http://www.injuryboard.com/view.cfm/Topic=31
Based on the U.S. Annual death rate of 8.7 per 1000. http://www.democraticunderground.com/discuss/duboard.php?az=view_all&address=203x347144
Blanchard, E. B; Hickling, E. J; Taylor, a. E; Loos, W. R; Forneris, C. a; Jaccard. J. Who develops PTSD from motor vehicle accidents? Behavior Research Therapy. vol. 34, no. 1, January, 1996. pp: 1-10.