[1] German Canc Res Ctr, Tumor Immunol Program, DKFZ, Div Immunogenet, D-69120 Heidelberg, Germany
[2] Univ Frankfurt, Med Clin 2, D-6000 Frankfurt, Germany
[3] German Canc Res Ctr, Cent Unit Biostat, DKFZ, D-69120 Heidelberg, Germany
[4] MDK BW AV ASt, Serv Pediat, Heidelberg, Germany
[5] Univ Heidelberg, Dept Anesthesiol, Heidelberg, Germany
[6] German Canc Res Ctr, Div Apoptosis Regulat, DKFZ, D-69120 Heidelberg, Germany
[7] Inst Pasteur, Antiviral Immun Biotherapy & Vaccine Unit, Paris, France