“…After abstract screening and manual searching of references, we search out 62 articles meeting the criteria for full‐text reviewing. Among the 62 articles, 46 were excluded and 16 research articles were included in the final meta‐analysis (Beckmann & Türe, 2019; Busillo et al., 2014; D'Amico et al., 2004; Doi et al., 2009; Gebhardt, Kropp, Hoffmann, & Zettl, 2018; Gustavsen et al., 2016; Katsiari, Vikelis, Paraskevopoulou, Sfikakis, & Mitsikostas, 2011; Kister et al., 2010; Möhrke, Kropp, & Zettl, 2013; Nicoletti et al., 2008; Özer, Ergün, & İnan, 2018; Putzki et al., 2009; Sorgun, Yucesan, & Yasemin, 2013; Srivastava, Wang, Ugurlu, & Amezcua, 2016; Vacca et al., 2007; Villani et al., 2008).…”