“…In addition, peer-delivered interventions may be more acceptable to marginalized populations such as drug users, who are often mistrustful of health care professionals because they are delivered by individuals who are behaviorally and ethnically similar and draw on people’s intrinsic motivations to help others in their same circumstances (Broadhead et al, 1995; Friedman et al, 2004; Kelley, Murphy, & Lune, 2001; Latkin, 1998; Latkin, Hua, & Tobin, 2003; Weeks, Dickson-Gomez, Mosack et al, 2006). Indeed, many studies have found peer interventionists to be extremely effective at reaching hidden populations, and delivering prevention materials and messages (Amirkhanian, Kelly, Kabakchieva, McAuliffe, & Vassileva, 2003; Dickson-Gomez et al, 2006; French, Power, & Mitchell, 2000; Ross, Harzke, Scott, McCann, & Kelley, 2006; Simons et al, 1996; Van Khoat, West, Valdiserri, & Phan, 2003; Weeks et al, 2009). …”