A total of 10,935 women with visual impairment were identified from the Finnish Register of Visual Impairment and followed up for cancer through the Finnish Cancer Registry for years 1983-1996. Breast cancer risk decreased by degree of visual impairment (P for trend 0.04) which suggests a dose-response relationship between visible light and breast cancer risk.
CITATION STYLE
Verkasalo, P. K., Pukkala, E., Stevens, R. G., Ojamo, M., & Rudanko, S. L. (1999). Inverse association between breast cancer incidence and degree of visual impairment in Finland. British Journal of Cancer, 80(9), 1459–1460. https://doi.org/10.1038/sj.bjc.6690544
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