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Gautschi, O; Huegli, B; Ziegler, A; Gugger, M; Heighway, J; Ratschiller, D; Mack, P C; Gumerlock, P H; Kung, H J; Stahel, R A; Gandara, D R; Betticher, D C (2007). Origin and prognostic value of circulating KRAS mutations in lung cancer patients. Cancer letters, 254(2), pp. 265-73. Amsterdam: Elsevier 10.1016/j.canlet.2007.03.008
