1447PRisk of not receiving second-line therapy is high in EGFR mt+ pts: Real world data of certified lung cancer centers on treatment sequence in EGFR mt+ pts. (23rd October 2018) - Roeper, J; Falk, M; Schatz, S; Tiemann, M; Wesseler, C; Wiest, G; Sackmann, S; Ukena, D; Heukamp, L C; Griesinger, F