[1] Med Ctr Haaglanden, The Hague, Netherlands
[2] VU Univ Med Ctr, The Hague, Netherlands
[3] Reg Canc Ctr Stockholm, Stockholm, Sweden
[4] Umea Univ, Stockholm, Sweden
[5] European Org Res & Treatment Canc EORTC, Qual Life Dept, Brussels, Belgium
[6] Univ Calif Los Angeles, Los Angeles, CA USA
[7] Univ Med Ctr, Heidelberg, Germany
[8] Univ Toronto, Princess Margaret Hosp, Toronto, ON, Canada
[9] Royal Marsden NHS Fdn Trust, Surrey, England
[10] Saitama Med Univ, Int Med Ctr, Saitama, Japan
[11] Genentech Inc, San Francisco, CA 94080 USA
[12] F Hoffmann La Roche & Co Ltd, CH-4002 Basel, Switzerland
[13] Aix Marseille Univ, CHU Timone, AP HM, Marseille, France