[1] Gustave Roussy, Villejuif, France
[2] Univ Paris 11, Orsay, France
[3] Sarah Cannon Res Inst, Nashville, TN USA
[4] Dana Farber Canc Inst, Boston, MA 02115 USA
[5] Fdn IRCCS Ist Nazl Tumori, Thorac Oncol Unit, Milan, Italy
[6] Univ Klinikum Essen, West German Canc Ctr, Essen, Germany
[7] Ruhrlandklin, Essen, Germany
[8] CHU Vaudois, Dept Oncol, Lausanne, Switzerland
[9] Natl Canc Ctr, Singapore, Singapore
[10] Kansai Med Univ, Hirakata Hosp, Osaka, Japan
[11] Genentech Inc, San Francisco, CA 94080 USA
[12] Columbia Univ, New York, NY USA