Dalla Chiesa, M., Passalacqua, R., & Michiara, et al., M. (2007). Tamoxifen vs Tamoxifen plus 13-cis-retinoic acid vs Tamoxifen plus Interferon a–2a as first-line endocrine treatments in advanced breast cancer: updated results of a phase II, prospective, randomised multicentre trial. Acta Biomedica Atenei Parmensis, 78(3), 204-209. https://mattioli1885journals.com/index.php/actabiomedica/article/view/1903