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Large MM and Nielssen OB. Suicide in Australia: Meta-Analysis of Rates and Methods of Suicide between 1988 and 2007. Med J Aust 2010; 192(8):432-7.
This study analyzed changes in suicide rates and methods following the 1998 ban on private gun ownership in Australia, and found a decrease in firearm suicides post-ban as well as an increase in hanging that was not substantial enough to prevent the overall suicide rate for Australia from declining post-ban.
Mehlum L. Restricting access to firearms: recent developments from the Norwegian national strategy for suicide prevention. Psychiatr Danub. 2006; 18(Suppl1): 104.
Miller M, Azrael D, Hepburn L, Hemenway D, and Lippman S. The association between changes in household firearm ownership and rates of suicide in the United States, 1981-2002. Injury Prevention. 2006; 12:178-82.
Wintemute GJ, Parham CA, Beaumont JJ, Wright M, Drake C. Mortality among recent purchasers of handguns. N Engl J Med. 1999;341(21):1583-9.