[1] Tianjin Med Univ Canc Inst & Hosp, Dept Thorac Surg, Key Lab Canc Prevent & Therapy, Tianjin Lung Canc Ctr, Tianjin 300060, Peoples R China
[2] Tianjin Med Univ, Tianjin, Peoples R China
[3] Tianjin Med Univ, Dept Publ Hlth, Tianjin, Peoples R China
[4] Cent S Univ, Xiangya Med Sch, Changsha, Hunan, Peoples R China
[5] Harvard Univ, Sch Publ Hlth, Cambridge, MA 02138 USA