Biomarkers of Anti-Angiogenic Therapy in Metastatic Colorectal Cancer (mCRC): Original Data and Review of the Literature - Pohl, M.; Werner, N.; Munding, J.; Tannapfel, A.; Graeven, U.; Nickenig, G.; Schmiegel, W.; Reinacher-Schick, A. (Zeitschrift für Gastroenterologie, 2011)