Table 4.

Pearson correlation analysis of serum elements (r)

	Fe	Mn	Zn	Cu	Se	Cd
Mn	0.378*
Zn	0.715*	0.422*
Cu	-0.309*	-0.16	-0.122
Se	0.477*	0.393*	0.563*	0.016
Cd	0.155	0.134	0.085	-0.031	0.002
Pb	-0.185	-0.347*	-0.153	0.245*	-0.177	0.106

^* P<0.05 was considered statistically significant.