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Distribution of tumor thickness for patients with melanomas ≤ 0.5mm in the post-correction (n=1,869) and pre-correction (n=1,955) SEER Detroit cohort, the PLG cohort (n=742), and all SEER regions but for Detroit (n=31,558). The red vertical line indicates 0.25mm. Abbreviations: SEER, Surveillance, Epidemiology and End Results; PLG, Pigmented Lesion Group.
