[1] Univ Freiburg, Med Ctr, Dept Internal Med 1, Freiburg, Germany
[2] Univ Freiburg, Med Ctr, Dept Internal Med 1, Fac Med, Freiburg, Germany
[3] Univ Freiburg, Univ Freiburg Med Hosp, Dept Hematol Oncol Stem Cell Transplantat, Freiburg, Germany
[4] Univ Freiburg, Med Ctr, Dept Hematol Oncol Stem Cell Transplantat, Freiburg, Germany
[5] Univ Freiburg, Fac Med, Dept Hematol Oncol & Stem Cell Transplantat, Freiburg, Germany
[6] Univ Freiburg, Med Ctr, Freiburg, Germany
[7] Princess Maxima Ctr Pediat Oncol, Utrecht, Netherlands
[8] Univ Freiburg, Fac Med, Dept Internal Med 1, Freiburg, Germany