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. 2014 Dec 18;9(12):e114972. doi: 10.1371/journal.pone.0114972

Figure 1. Median serum ferritin concentrations according to age group.

Figure 1

As women become older, the median serum ferritin levels showed tendency to increase. After dividing women into two groups depending on menopausal status, the median serum ferritin in premenopausal women was found to be much lower than that in postmenopausal women, in between 40–59 years old.