Suppression of relapse in patients with acute leukemias and MDS after allogeneic CT by early immunotherapy initiated on the basis of increasing mixed chimerism: a single center experience of 12 children. - Bader,P.; Klingebiel,T.; Schaudt,A.; Handgretinger,R.; Theurer-Mainka,U.; Lang,P.; Schlegel,P.G.; Beck,J.F. (Leukemia, 1999)