[1] Maria Sklodowska Curie Inst & Oncol Ctr, Dept Lymphoid Malignancies, Warsaw, Poland
[2] Maria Sklodowska Curie Inst & Oncol Ctr, Dept Radiol, Warsaw, Poland
[3] Hop Necker Enfants Malad, Dept Hematol, Paris, France
[4] Univ Munich, Univ Munchenmed Klin & Poliklin 3, Munich, Germany