Department of Cancer Epidemiology;
National Cancer Center/Cancer Hospital;
Chinese Academy of Medical Sciences and Peking Union Medical College;
Beijing 100021;
China;
Pritzker School of Medicine;
University of Chicago;
Chicago;
IL 60637-5415;
USA;
UJMT Fogarty Consortium;
NIH Fogarty International Center;
Bethesda;
MD 20892-2220;
USA;
Department of Gynecological Oncology;
National Cancer Center/Cancer Hospital;
Chinese Academy of Medical Sciences and Peking Union Medical College;
Beijing 100021;
China;
Department of Cytology;
National Cancer Center/Cancer Hospital;
Chinese Academy of Medical Sciences and Peking Union Medical College;
Beijing 100021;
China;
Department of Pathology;
National Cancer Center/Cancer Hospital;
Chinese Academy of Medical Sciences and Peking Union Medical College;
Beijing 100021;
China;
Wuxiang Maternal and Child Health Care and Family Planning Service Center;
Changzhi 046300;
China;
Xiangyuan Maternal and Child Health Care and Family Planning Service Center;
Changzhi 046200;
China;
Department of Epidemiology;
University of North Carolina;
Chapel Hill;
NC 27599-7435;
USA;
Department of Education;
National Cancer Center/Cancer Hospital;
Chinese Academy of Medical Sciences and Peking Union Medical College;
Beijing 100021;
China;