Evaluation of circulating cell-free DNA as a molecular monitoring tool in patients with metastatic cancer.

Hufnagl, C; Leisch, M; Weiss, L; Melchardt, T; Moik, M; Asslaber, D; Roland, G; Steininger, P; Meissnitzer, T; Neureiter, D; Greil, R; Egle, A;