“…The present study included twelve epidemiological studies (ten case-control (McLaughlin et al, 1984;Goodman et al, 1986;Talamini et al, 1990;Kreiger et al, 1993;Mellemgaard et al, 1994;De Stefani et al, 1998;Bianchi et al, 2000;Hu et al, 2009;Montella et al, 2009;Wang et al, 2012) and two cohort studies (Lee Table 1. Of the ten case-control studies, five were conducted in the USA/Canada (McLaughlin et al, 1984;Goodman et al, 1986;Kreiger et al, 1993;Bianchi et al, 2000;Hu et al, 2009), and the remaining five were conducted in Denmark (Mellemgaard et al, 1994), Italy (Montella et al, 2009), Uruguay (De Stefani et al, 1998), and China (Wang et al, 2012).…”