“…Among the studies included in this review, n = 3 were cluster-randomized controlled trials, (Armour et al, 2004; Krass et al, 2007; Mehuys et al, 2011) whereas rest of the studies, n = 40 were parallel randomized controlled trials (Sarkadi and Rosenqvist, 2004; Clifford et al, 2005; Hayward et al, 2005; Odegard et al, 2005; Rothman et al, 2005; Suppapitiporn et al, 2005; Taylor et al, 2005; Fornos et al, 2006; Scott et al, 2006; Ko et al, 2007; Al Mazroui et al, 2009; Doucette et al, 2009; Jameson and Baty, 2010; Kang et al, 2010; Taveira et al, 2010; Cohen et al, 2011; Farsaei et al, 2011; Sriram et al, 2011; Ali et al, 2012; Chan et al, 2012; Jacobs et al, 2012; Jarab et al, 2012; Mahwi and Obied, 2013; Mourão et al, 2013; Samtia et al, 2013; Castejón et al, 2014; Chung et al, 2014; Ahmad et al, 2015; Cani et al, 2015; Chow et al, 2015; Jahangard-Rafsanjani et al, 2015; Wishah et al, 2015; Butt et al, 2016; Chen et al, 2016; Lim et al, 2016; Nascimentoa et al, 2016; Tourkmani et al, 2016; Korcegez et al, 2017; Shao et al, 2017; Siaw et al, 2017). Most of the included studies ( n = 20) were conducted in Asia (Suppapitiporn et al, 2005; Ko et al, 2007; Kang et al, 2010; Farsaei et al, 2011; Sriram et al, 2011; Chan et al, 2012; Jarab et al, 2012; Mahwi and Obied, 2013; Samtia et al, 2013; Chung et al, 2014; Chow et al, 2015; Jahangard-Rafsanjani et al, 2015; Wishah et al, 2015; Butt et al, 2016; Chen et al, 2016; Lim et al, 2016; Tourkmani et al, 2016; Shao et al, 2017; Siaw et al, 2017), followed by North America ( n = 11) (Hayward et al, 2005; Odegard et al, 2005; Rothman et al, 2005; Scott et al, 2006; Doucette et al, …”