[1] Southern Med Univ, Guangdong Acad Med Sci, Guangdong Prov Peoples Hosp, Guangdong Lung Canc Inst, Guangzhou, Peoples R China
[2] Netherlands Canc Inst, Amsterdam, Netherlands
[3] Natl Canc Ctr, Chuo Ku, Tokyo, Japan
[4] Univ Texas MD Anderson Canc Ctr, Houston, TX 77030 USA