Risk of not receiving 2nd line therapy is high in EGFR mt+ patients: Real world data of certified lung cancer centers on treatment sequence in EGFR mt+ patients - Roeper, J; Falk, M; Schatz, S; Tiemann, M; Sackmann, S; Ukena, D; Wesseler, C; Wiest, G; Heukamp, L; Griesinger, F (Pneumologie, 2019)