The EPIC-Norfolk Study
Postmenopausal breast cancer risk and cumulative number of menstrual cycles.
Chavez-MacGregor M, Elias SG, Onland-Moret NC, van der Schouw YT, van Gils CH, Monninkhof E, Grobbee DE, and Peeters PH
Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology. Apr 2005
(DOI : 10.1158/1055-9965.EPI-04-0465)