[1] Perugia Hosp, Dept Med Oncol, Perugia, Italy
[2] Charles Univ Prague, Dept Pneumol & Throac Surg, CR-11636 Prague 1, Czech Republic
[3] Hosp Grosshansdorf, Dept Thorac Oncol, Grosshansdorf, Germany
[4] Charles Univ Prague, Med Fac Pilsen, Plzen, Czech Republic
[5] Birmingham Heartlands Hosp, Dept Oncol, Birmingham, W Midlands, England
[6] Univ Cambridge, Hosp NHS Trust, Oncol Dept, Cambridge, England
[7] Univ Colorado, Canc Ctr, Colorado City, CO USA
[8] Astra Zeneca, Macclesfield, Cheshire, England
[9] Queen Elizabeth Hosp, Dept Oncol, Birmingham, W Midlands, England