Scandinavian Journal of Work, Environment and Health - vol. 42 n° 6 -
"In a cohort of 6093 female flight attendants, breast cancer incidence was not associated with cumulative exposure to cosmic radiation or two metrics of circadian rhythm disruption. Positive exposure-response relations were observed only in the small subset of the cohort with parity of three or more. Cautious interpretation of the findings in women with high parity is warranted."
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