“…tighter regulation and access to firearms, illegal and legal drugs, agricultural pesticides and domestic gas) has been associated with lower suicide within some populations (Beautrais, Fergusson, & Horwood, 2005;Daigle, 2005;Hawton, 2007;Nordentoft, Qin, Helweg-Larsen, & Juel, 2006Rodríguez Andrés & Hempstead, 2011;Skegg & Herbison, 2009;Wong, Chan, Lau, Morgan, & Yip, 2009). However, research also suggests the importance of considering the risk of method substitution (whereby suicidal persons prevented from using one method will shift consideration to an alternate method) and the other possible influences such as the degree of familiarity with the method, gender, age and geographical location (De Leo, Dwyer, Firman, & Neulinger, 2003;De Leo, Evans, & Neulinger, 2002;Klieve, Barnes et al, 2009;Klieve, Sveticic et al, 2009;Roberts et al, 2003).…”