“…Workers in automobile production who previously showed elevated risks for testicular cancer are, for example, skilled workers exposed to metals, metal dust, and possibly cutting oil [Van den Eeden et al, 1991;Rhomberg et al, 1995;Pollán et al, 2001;Walschaerts et al, 2007], and motor vehicle mechanics [Pearce et al, 1987]. Other occupational groups which appeared to have elevated risks are white collar workers [Pearce et al, 1987;Van den Eeden et al, 1991], professional employees (administrators, teachers, and other professionals) [Hayes et al, 1990], workers in the electrical power industry [Knight et al, 1996] and service workers [Pearce et al, 1987;Knight et al, 1996].…”