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