Circulating tumor cell composition and outcome in patients with solid tumors.

Correspondence to Priv.-Doz. Dr. med. habil. Andreas-C. Hoffmann Department of Medical Oncology, Molecular Oncology Risk-Profile Evaluation (MORE), West German Cancer Center, University Hospital Essen, Hufelandstrase 55, 45147 Essen, Germany hoffmann@ more-oncology.com