Faltinova M, Vehmanen L, Lyytinen H, Haanpaa M, et al. Effects of letrozole on serum estradiol and estrone in postmenopausal breast cancer patients and tolerability of treatment: a prospective trial using a highly sensitive LC-MS/MS (liquid chromatography-tandem mass spectrometry) method for estrogen meas Breast Cancer Res Treat 2023 Jul 25. doi: 10.1007/s10549-023-07054.
PMID: 37491651