“…Alongside their expansion, they have appeared in the popular media regularly and been subject to academic scrutiny (Monto, 1998;Campbell and Storr, 2001;Fischer et al, 2002;Wortley et al, 2002;Gibbs van Bruschot, 2003;Kennedy et al, 2004;Sanders, 2008;Shivley et al, 2008;Lovell and Jordan, 2012;Gurd and O'Brien, 2013;Cook, 2014;Majic, 2014). The academic literature has provided a number of useful and critical insights.…”