[1] Univ Leuven, KU Leuven, Dept Microbiol & Immunol, Rega Inst Med Res,Lab Mol Immunol, Minderbroedersstr 10, B-3000 Leuven, Belgium
[2] NCI, Canc & Inflammat Program, Ctr Canc Res, Frederick, MD 21702 USA
[3] Brussels Branch, Ludwig Canc Res, Brussels, Belgium
[4] Catholic Univ Louvain, de Duve Inst, Brussels, Belgium