[1] Inst Jules Bordet, B-1000 Brussels, Belgium
[2] CHU Calmette, Lille, France
[3] CHU Charleroi, Charleroi, Belgium
[4] Evangelismos Gen Hosp, Athens, Greece
[5] Clin Univ St Luc, Namur, Belgium
[6] Hosp Sagunto, Valence, France
[7] Hellen Canc Inst, Athens, Greece