[1] Inst Nacl Canc, Div Clin & Translat Res, Rio De Janeiro, Brazil
[2] Pucrs Sch Med, Dept Med, Porto Alegre, RS, Brazil
[3] Massachusetts Gen Hosp, Dept Thorac Oncol, Boston, MA 02114 USA
[4] Chinese Acad Med Sci Cams, Dept Med Oncol, Beijing, Peoples R China
[5] European Inst Oncol, Med Oncol Unit Resp Tract & Sarcomas, Milan, Italy
[6] Natl Taiwan Univ, Coll Med, Taipei 10764, Taiwan
[7] Mem Sloan Kettering Canc Ctr, New York, NY 10021 USA
[8] S Maria Della Misericordia Hosp, Perugia, Italy
[9] Pfizer, Oncol, New York, NY USA
[10] Seoul Natl Univ Hosp, Dept Internal Med, Seoul 110744, South Korea
[11] Pfizer, Oncol, Milan, Italy