[1] Mem Sloan Kettering Canc Ctr, 1275 York Ave, New York, NY 10021 USA
[2] Yonsei Univ, Coll Med, Yonsei Canc Ctr, Seoul, South Korea
[3] McMaster Univ, Juravinski Canc Ctr, Hamilton, ON, Canada
[4] Jilin Canc Hosp, Changchun, Peoples R China
[5] Inst Canc Estado Sao Paulo, Sao Paulo, Brazil
[6] Hacettepe Univ, Canc Inst, Dept Med Oncol, Ankara, Turkey
[7] Fox Chase Canc Ctr, 7701 Burholme Ave, Philadelphia, PA 19111 USA
[8] Shizuoka Canc Ctr, Nagaizumi, Shizuoka, Japan
[9] Merck & Co Inc, Kenilworth, NJ USA
[10] Natl Taiwan Univ Hosp, Taipei, Taiwan
[11] Natl Taiwan Univ, Canc Ctr, Taipei, Taiwan