[1] Univ Libre Bruxelles, Hop Erasme, Dept Clin Chem, Brussels, Belgium
[2] Univ Libre Bruxelles, Hop Univ Reine Fabiola, Dept Hematol Oncol, Brussels, Belgium
[3] Hop Citadelle, Hematol Lab, Liege, Belgium
[4] Univ Liege, CHR Citadelle, Dept Pediat, Liege, Belgium