The GPO Cooperative Ewing's Sarcoma Studies CESS 81/86: Report after 6 1/2 years

H. Jurgens, V. Bier, J. Dunst, D. Harms, A. Jobke, R. Kotz, J. Kuhl, St Muller-Weihrich, J. Ritter, M. Salzer-Kuntschik, R. Sauer, W. Sternschulte, J. Treuner, P. A. Voute, P. Weinel, W. Winkelmann, K. Winkler, U. Gobel