Free estradiol and breast cancer risk in postmenopausal women: Comparison of measured and calculated values by Key, T, Appleby, P, Reeves, G, Roddam, A, Dorgan, J, Longcope, C, Stanczyk, F, Stephenson, H, Falk, RT, Miller, R, Schatzkin, A, Allen, D, Fentiman, I, Key, T, Wang, D, Thomas, H, Hankinson, SE, Toniolo, P, Akhmedkhanov, A, Koenig, K, Shore, R, Zeleniuch-Jacquotte, A, Berrino, F, Muti, P, Krogh, A

Body mass index, serum sex hormones, and breast cancer risk in postmenopausal women. by Key, T, Appleby, P, Reeves, G, Roddam, A, Dorgan, J, Longcope, C, Stanczyk, F, Stephenson, H, Falk, RT, Miller, R, Schatzkin, A, Allen, D, Fentiman, I, Key, T, Wang, D, Dowsett, M, Thomas, H, Hankinson, SE, Toniolo, P, Akhmedkhanov, A, Koenig, K, Shore, R, Zeleniuch-Jacquotte, A, Berrino, F, Muti, P