[1] UCCH, Hubertus Wald Tumor Ctr, Hamburg, Germany
[2] Hop St Antoine, F-75571 Paris, France
[3] Inst Cancerol Ouest Site Rene Gauducheau, Nantes, France
[4] Hosp Clin San Carlos, Madrid, Spain
[5] Univ Helsinki, Cent Hosp, Helsinki, Finland
[6] Paracelsus Med Univ Hosp Salzburg, Med Dept Hematol Med Oncol 3, Salzburg, Austria
[7] AGMT Arbeitsgemeinschaft Medikamentose Tumorthera, Salzburg, Austria
[8] Univ Hosp Gasthuisberg, B-3000 Louvain, Belgium
[9] Kantonsspital Graubuenden, Graubuenden, Switzerland
[10] Genentech Inc, San Francisco, CA 94080 USA
[11] Roche, Basel, Switzerland
[12] Dist Clin Reutlingen, Dept Internal Med 1, Reutlingen, Germany