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Prevalence of concomitant cutaneous disorders in different age groups of the 848 adults from Hangzhou City, China
χ 2 test was performed for comparison with the middle-aged group, * P<0.05. The distribution of other concomitant cutaneous disorders in the young, middle-aged, and old groups: Bowen’s disease: 0, 2, 2; basal cell carcinoma: 0, 1, 4; squamous cell carcinoma: 0, 1, 2; malignant melanoma: 0, 2, 3
