1449PEfficacy of afatinib in the clinical practice: First results of the GIDEON trial: A prospective non-interventional study (NIS) in EGFR mutated NSCLC in Germany. (23rd October 2018) - Brueckl, W M; Laack, E; Reck, M; Griesinger, F; Schäfer, H; Kortsik, C; Gaska, T; Rawluk, J; Krüger, S; Kokowski, K; Budweiser, S; Schueler, A; et al.