Filtration based assessment of CTCs and CellSearch® based assessment are both powerful predictors of prognosis for metastatic breast cancer patients oleh Hanna Huebner, Peter A. Fasching, Walter Gumbrecht, Sebastian Jud, Claudia Rauh, Mark Matzas, Peter Paulicka, Katja Friedrich, Michael P. Lux, Bernhard Volz, Paul Gass, Lothar Häberle, Franziska Meier-Stiegen, Andreas Hartkopf, Hans Neubauer, Katrin Almstedt, Matthias W. Beckmann, Tanja N. Fehm, Matthias Ruebner