The EPIC-Norfolk Study
Polymorphisms in the estrogen receptor alpha gene and mammographic density.
van Duijnhoven FJ, Bezemer ID, Peeters PH, Roest M, Uitterlinden AG, Grobbee DE, and van Gils CH
Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology. Nov 2005
(DOI : 10.1158/1055-9965.EPI-05-0398)