Table 4.

Serum concentration of zinc and ferritin during the study (mean ± standard deviation).

	Zinc (μg/dl)	Ferritin (mg/ml)
Control
Baseline	86.4 ± 13.7	44.7 ± 45.0
End	82.6 ± 17.8	45.6 ± 41.0
Intervention
Baseline	80.5 ± 11.6	43.2 ± 34.6
End	80.0 ± 13.2	47.7 ± 43.1