Heilig, C E;Horak, P;Kreutzfeldt, S;Teleanu, V;Mock, A;Renner, M;Bhatti, I A;Hutter, B;Hüllein, J;Fröhlich, M;Uhrig, S;Süße, H;Heiligenthal, L;Ochsenreither, S;Illert, A L;Vogel, A;Desuki, A;Heinemann, V;Heidegger, S;Bitzer, M;Scheytt, M;Brors, B;Hübschmann, D;Baretton, G;Stenzinger, A;Steindorf, K;Benner, A;Jäger, D;Heining, C;Glimm, H;Fröhling, S;Schlenk, R F.Rationale and design of the CRAFT (Continuous ReAssessment with Flexible ExTension in Rare Malignancies) multicenter phase II trial..ESMO Open.2021.6.6