“…Among the 14 observational studies (Giglia et al, 2011; Dai et al, 2013; Wang et al, 2013a, b; Huang C.J. et al, 2014; Jacobson and Matthaeus, 2014; Tsai and Wang, 2015; Guo et al, 2016; Tsai et al, 2016; Chang et al, 2017; Chueh et al, 2017; Yu et al, 2017; Becker et al, 2018; Li et al, 2018), one involved children (Becker et al, 2018), seven involved young adults (Giglia et al, 2011; Wang et al, 2013a, b; Jacobson and Matthaeus, 2014; Chang et al, 2017; Chueh et al, 2017; Yu et al, 2017), and six involved older adults (Dai et al, 2013; Huang C.J. et al, 2014; Tsai and Wang, 2015; Guo et al, 2016; Tsai et al, 2016; Li et al, 2018).…”