1. Practical statistics for medical research;Altman,1991
2. A league table of child deaths by injury in rich nations. Florence: Innocenti Reseach Center 2/1/2001. Report No., Innocenti Report Card No. 2; 2001.
3. Trends in nonfatal and fatal firearm-related injury rates in the United States, 1985–1995;Cherry;Ann Emerg Med,1998
4. Deaths resulting from firearm- and motor-vehicle-related injuries—United States, 1968–1991. MMWR Morb Mortal Wkly Rep 1994; 43:37–42.
5. Homicide trends in the United States;Fox,2002