The effects of high dose polychemotherapy with autologous bone marrow transplantation (ABMT) in 18 children with relapsed lymphoma: O. Hartmann(1), F. Pein(1), T. Philip(2), P. Biron(2), J. Lemerle(1). (1) Institut Gustave-Roussy, Villejuif - France (2) Centre Léon Bérard - Lyon - France