Epidemiology, Precursors, and Markers of Malignant Melanoma
We present some new analyses of data from the Western Canada Melanoma Study [1–3], based on 595 subjects with melanoma, excluding lentigo, and community controls. The validity of the study has been checked; interviewed patients do not differ from non-interviewed patients in pathological type, stage, or age, and the control group is virtually identical to the census populationon variables where this can be assessed. For many exposures, the proportions of patients and controls giving positive replies are virtually identical, suggesting no major response bias.
KeywordsPrecursor Lesion Melanoma Risk Primary Cutaneous Melanoma Dysplastic Nevus Congenital Melanocytic Nevus
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