“…In Brazil, several studies have shown similar findings. For example, in Porto Alegre state, a total of 417 patients with skull-encephalic injuries produced by a single projectile showed a mortality rate of 63.1% [10]. In São Paulo state,2,714 homicides were reported for the second half of 2001, with most of these caused by firearms (88.6%), and most of the homicides (68.9%) were by head injuries [11].…”