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S ummary The light exposed areas of the head and neck, forearms and dorsa of hands of two thousand adults aged forty years and older were at the Alfred Hospital between 1982 and 1983. There were 1,029 males and 971 females. Fifty‐nine people (3%) had at least one non‐melanotic skin cancer and 754 (37.7%) had at least one solar keratosis. The results of this study confirm the impression that sunlight exposure is a major determining factor in development of these tumours.
Goodman et al. (Sat,) studied this question.
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