“…In the present study, males were more frequently affected than females in the ratio of 3.25:1, which was close to a previously reported ratio (3.1:1) [35]. However, the ratio reported in the present study is higher than other previously reported ratios [4,7,9,10,15,[17][18][19][28][29][30][31][32][33]. Nevertheless, higher ratios of 6.5:1 [8] and 7.2:1 [34] have been reported in the literature.…”