[1] Univ Antwerp, Oncol Res Ctr, B-2020 Antwerp, Belgium
[2] Univ Antwerp Hosp, Early Clin Trials Unit, Dept Oncol, Antwerp, Belgium
[3] Univ Antwerp Hosp, Dept Oncol, Antwerp, Belgium
[4] Univ Navarra Clin, Dept Oncol, Pamplona, Spain
[5] Univ Antwerp Hosp, Mol Pathol Unit, Dept Pathol, Antwerp, Belgium