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. 2020 Jun 13;60(8):1785–1792. doi: 10.1111/trf.15906

Fig .1.

Fig .1

Distributions of ferritin levels in new (solid line) and repeat donors (dashed line) for various combinations of sex and age category. Sample sizes range from 1037 (male new donors age 50+) to 14,848 (male repeat donors age 50+).