1. National Highway Traffic Safety Administrationhttp://www.utu324.com/national_highway_traffic_safety.htm
2. Primary Health Care: Now More than Everhttp://www.who.int/whr/2008/en/index.html
3. Is the U.S. on the Path to the Lowest Motor Vehicle Fatalities in Decades?http://deepblue.lib.umich.edu/handle/2027.42/60424