Key, TJ, Appleby, PN, Reeves, G, Roddam, AW, Helzlsouer, K, Alberg, AJ, Rollison, DE, Dorgan, JF, Brinton, LA, Overvad, K, Kaaks, R, Trichopoulou, A, Clavel-Chapelon, F, Panico, S, Duell, EJ, Peeters, PHM, Rinaldi, S, Fentiman, IS, Dowsett, M, Manjer, J, Lenner, P, Hallmans, G, Beglietto, L, English, DR, Gilles, GG, et al., X & Strickler, HD 2011, '
Circulating sex hormones and breast cancer risk factors in postmenopausal women: reanalysis of 13 studies.',
British Journal of Cancer, vol. 105, no. 5, pp. 709-722. <
http://www.ncbi.nlm.nih.gov/pubmed/21772329>