“…All studies are from the United States of America (USA). Nine papers are quantitative studies (Choi, Huang, & Ryan, 2012;Choi & Ryan, 2007;Gayle A Dakof, Cohen, & Duarte, 2009;Grant et al, 2011;Green, Rockhill, & Furrer, 2006;Grella et al, 2009;Huang & Ryan, 2011;McCann et al, 2010;Twomey, Caldwell, Soave, Fontaine, & Lester, 2011). One qualitative study (Einbinder, 2010) and one multiple embedded case history (Blakey, 2012) were also included.…”