“…Information was extracted and tabulated, with Tables 2, 3 showing study characteristics and Table 4 showing significant findings from the selected articles. Eight studies were conducted in the USA (Robb, 2000;Colwell et al, 2005Colwell et al, , 2013Robb et al, 2008Robb et al, , 2014Beebe et al, 2010;Madden et al, 2010;Stafstrom et al, 2012), two studies were carried out in Canada (Barrera et al, 2002;MacDonald et al, 2019), one in Iraq (Abdulah and Abdulla, 2018), one in Hong Kong (Li et al, 2011), two in Iran (Khodabakhshi Koolaee et al, 2016;Tomaj et al, 2016), one in Italy (Giordano et al, 2020), and one study in Sweden (Uggla et al, 2018).…”