“…PTSD is tenacious, debilitating, and treatment refractory in many cases (Breslau, Peterson, Poisson, Schultz, & Lucia, 2004; Hoskins et al, 2015; Institute of Medicine, 2014; Kessler, 2000; Roberts, Roberts, Jones, & Bisson, 2015, 2016; Schnyder et al, 2015; Sijbrandij, Kleiboer, Bisson, Barbui, & Cuijpers, 2015). Early interventions may reduce the prevalence of chronic PTSD among survivors at risk (Kearns, Ressler, Zatzick, & Rothbaum, 2012), but they are resource demanding and effective in only a subset of survivors.…”