REASON: A Registry for the Epidemiologic and Scientific evaluation of EGFR mutation status in newly diagnosed NSCLC patients stage IIIB/IV in Germany. 1. Juni 2011 Schuette, W., Eberhardt, W., Graf von der Schulenburg, J.-M., Dietel, M., Schirmacher, P., Gutendorf, B., Thomas, M., 2011. Amsterdam; 2011.