[1] Hosp Grosshansdorf, Dept Thorac Oncol, Grosshansdorf, Germany
[2] City Clin Hosp, Kiev, Ukraine
[3] Leningrad Reg Clin Hosp, St Petersburg, Russia
[4] Univ Aix Marseille 2, Assistance Publ Hop Marseille, Marseille, France
[5] Christian Med Coll & Hosp, Vellore, Tamil Nadu, India
[6] Johannes Gutenberg Univ Med Ctr, Dept Hematol Oncol & Pneumol, Mainz, Germany
[7] Bristol Myers Squibb Co, New York, NY 10154 USA
[8] Yale Canc Ctr, Dept Oncol, New Haven, CT USA
[9] Smilow Canc Hosp, New Haven, CT USA