[1]Harvard TH Chan Sch Publ Hlth, Dept Epidemiol, 677 Huntington Ave, Boston, MA 02115 USA.
[2]Fudan Univ, Zhongshan Hosp, Shanghai, Peoples R China.
[3]Peoples Liberat Army, Hosp 81, Peoples Liberat Army Canc Ctr, Beijing, Peoples R China.
[4]PLA, Hosp 307, Acad Mil Med Sci, Beijing, Peoples R China.
[5]Nanchang Univ, Affiliated Hosp 1, Nanchang, Jiangxi, Peoples R China.
[6]Harbin Med Univ, Canc Hosp, Harbin, Heilongjiang, Peoples R China.
[7]Shandong Canc Hosp, Jinan, Shandong, Peoples R China.
[8]Gansu Canc Hosp, Lanzhou, Gansu, Peoples R China.
[9]Anhui Med Univ, Affiliated Hosp 1, Hefei, Anhui, Peoples R China.
[10]Shanghai First Peoples Hosp, Shanghai, Peoples R China.
[11]Shanghai Jiao Tong Univ, XinHua Hosp, Shanghai, Peoples R China.
[12]Zhejiang Univ, Affiliated Hosp 1, Hangzhou, Zhejiang, Peoples R China.
[13]Jilin Prov Canc Hosp, Changchun, Jilin, Peoples R China.
[14]Fudan Univ, Shanghai Canc Ctr, Shanghai, Peoples R China.
[15]Nanjing Med Univ, Nanjing, Jiangsu, Peoples R China.
[16]Univ Athens, Dept Hyg Epidemiol & Med Stat, Sch Med, 75 M Asias St, GR-11527 Athens, Greece.
[17]Tongji Univ, Dept Oncol, Shanghai East Hosp, Sch Med, 150 Ji Mo Rd, Shanghai 200120, Peoples R China.