“…A total of 16 studies were conducted in North America, of which the majority were performed in the USA (Bemis et al, 2015; Cousino et al, 2017; Cox et al, 2019; Dupuis et al, 2016; Foster et al, 2020; Germann et al, 2015; Hinds et al, 2013; Hockenberry et al, 2017; Karimi et al, 2020; Kunin-Batson et al, 2016; Liu et al, 2018; Myers et al, 2014; Okado et al, 2018; Rodgers et al, 2019; Stoppelbein et al, 2006) and only one study was conducted in Canada (Lazor et al, 2019). Two studies were conducted in South America in Brazil (Coça et al, 2019; Scarpelli et al, 2008). There are 12 studies conducted in Asia, of which three studies in Japan(Sato et al, 2014; Tsuji et al, 2011; Wakimizu et al, 2011), three studies in Taiwan (Tsai et al, 2013; Wu et al, 2013, 2016), two studies in China (Li et al, 2010, 2013b), two studies in South Korea (Kim & Yi, 2013; Sohn et al, 2017), one in Indonesia (Sitaresmi et al, 2008) and one in Iran (Zahed & Koohi, 2020).…”