[1] Leyenburg Hosp, Dept Haematol, The Hague, Netherlands
[2] Univ Freiburg, Freiburg, Germany
[3] Univ Grootgasthuisberg, Louvain, Belgium
[4] Mt Godinne UCL, Yvoir, Belgium
[5] Hosp Jolimont, Haine St Paul, Belgium
[6] Hosp Notre Dame, Charleroi, Belgium
[7] Clin Univ St Luc, B-1200 Brussels, Belgium