Cristofanilli M, Hayes DF, Budd GT, et al: Circulating tumor cells: a novel prognostic factor for newly diagnosed metastatic breast cancer. J Clin Oncol 23 (7): 1420-1430, 2005.
Andree KC, van Dalum G and Terstappen LW: Challenges in circulating tumor cell detection by the CellSearch system. Mol Oncol 10 (3): 395-407, 2016.