[1] Univ Leipzig, Leipzig, Germany
[2] Leiden Univ MC, Leiden, Netherlands
[3] Chron Leukemia Working Party Registry, Leiden, Netherlands
[4] Univ Freiburg, Freiburg, Germany
[5] Univ Gasthuisberg, Louvain, Belgium
[6] Klin Knochenmarktransplantat GmBH, Idar Oberstein, Germany
[7] Univ Leiden Hosp, BMT Ctr, NL-2300 RC Leiden, Netherlands
[8] Hosp Jean Minjoz, Serv Hematol, Besancon, France
[9] Charite, Berlin, Germany
[10] Univ Essen Gesamthsch, Essen, Germany
[11] Univ St Radboud, Med Ctr, Nijmegen, Netherlands