[1] Univ Hosp Gasthuisberg, B-3000 Louvain, Belgium
[2] Orszagos Onkol Intezet, Budapest, Hungary
[3] Imelda Ziekenhuis, Bonheiden, Belgium
[4] NN Petrov Oncol Res Inst, St Petersburg, Russia
[5] Weikopolskie Centrum Onkol, Poznan, Poland
[6] Klinikum Oldenburg, Oldenburg, Germany
[7] Univ Klin Carl Gustav Carus, Dresden, Germany
[8] Lviv Oncol Med & Diagnost Ctr, Lvov, Ukraine
[9] Merck Serono, Darmstadt, Germany
[10] Hop Ambroise Pare, Boulogne, France