1. CHR de Grenoble, Grenoble, France; UZ Gasthuisberg, Leuven, Belgium; Cliniques Universitaires St Luc, Brussels, Belgium; Virga Jesse Hospital, Hasselt, Belgium; Istituto Scientifico H.S. Raffaele, Milan, Italy; Academisch Medisch Centrum, Amsterdam, Netherlands; Universiteit Gent, Gent, Belgium; CHR de Besançon, Besançon, France; EORTC, Brussels, Belgium