KLEPP, R.; LØNNING, P. E.; KVINNSLAND, S. Plasma Estrone and Estrone Sulphate in Breast Cancer Patients Treated with the Aromatase Inhibitor CGS 16949A. Acta Oncologica, [S. l.], v. 29, n. 4, p. 469–471, 1989. DOI: 10.3109/02841869009090031. Disponível em: https://medicaljournalssweden.se/actaoncologica/article/view/32683. Acesso em: 18 may. 2026.