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Springer Nature [academic journals on nature.com], British Journal of Cancer, 9(96), p. 1433-1435, 2007

DOI: 10.1038/sj.bjc.6603687

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Twin births, sex of children and maternal risk of ovarian cancer: a cohort study in Norway

Journal article published in 2007 by G. Albrektsen, I. Heuch ORCID, S. Thoresen, G. Kvåle
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

In a follow-up of 1 208 001 women aged 20–74 years, no significant association was found between twin births (112 cases) and risk, though those with twin girls had a non-significantly higher risk than those with singleton births; among the latter, those with girls only had a higher risk of endometrioid tumours (incidence rate ratio 1.35; 95% confidence interval 1.03–1.76, based on 475 cases) than women with boys only.