Ex vivo Expansion of Highly Purified NK Cells for Immunotherapy after Haploidentical Stem Cell Transplantation in Children - Koehl, U; Esser, R; Zimmermann, S; Tonn, T; Kotchetkov, R; Bartling, T; Sörensen, J; Grüttner, H -P; Bader, P; Seifried, E; Martin, H; Lang, P; Passweg, J R; Klingebiel, T; Schwabe, D (Klinische Pädiatrie, 2005)