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The gender difference of melanoma in different age groups. (A) age-specific incidence rates (per 100 000 personyears) for males and females from US SEER17 data set. The figure inside is on a different scale. (B) Age-specific relative risks for females as compared to males. (C) normalized difference (ND = (IRF−IRM)/IRT)) between male and female for each age group.
