Nunes AP, Liang C, Gradishar WJ, Dalvi T, Lewis J, Jones N, Green E, Doherty M, Seeger JD. U.S. prevalence of endocrine therapy-naive locally advanced or metastatic breast cancer. Curr Oncol. 2019 Apr;26(2):e180-7. doi: 10.3747/co.26.4163