[1] Inst Jules Bordet, B-1000 Brussels, Belgium
[2] Mayo Clin, Jacksonville, FL 32224 USA
[3] Vall Hebron Univ Hosp, Barcelona, Spain
[4] Dana Farber Canc Inst, Boston, MA 02115 USA
[5] GlaxoSmithKline Inc, Collegeville, PA USA
[6] European Inst Oncol, Milan, Italy