Linda L. Dahlberg, Robin M. Ikeda, Marcie-jo Kresnow; Guns in the Home and Risk of a Violent
Death in the Home: Findings from a National Study, American Journal of Epidemiology, Volume 160, Issue 10,
15 November 2004, Pages 929–936, https://doi.org/10.1093/aje/kwh309 .
What is the design of the study?
What is the data source for the study?