Circulating tumor cell number and endocrine therapy index in ER positive metastatic breast cancer patients oleh Costanza Paoletti, Meredith M. Regan, Samuel M. Niman, Emily M. Dolce, Elizabeth P. Darga, Minetta C. Liu, P. Kelly Marcom, Lowell L. Hart, John W. Smith, Karen L. Tedesco, Eitan Amir, Ian E. Krop, Angela M. DeMichele, Pamela J. Goodwin, Margaret Block, Kimberly Aung, Martha E. Brown, Robert T. McCormack, Daniel F. Hayes