[1] Chinese Univ Hong Kong, Prince Wales Hosp, Dept Obstet & Gynecol, Shatin, Hong Kong, Peoples R China
[2] Chinese Univ Hong Kong, Prince Wales Hosp, Dept Anat & Cellular Pathol, Shatin, Hong Kong, Peoples R China
[3] Harvard Univ, Brigham & Womens Hosp, Sch Med, Dept Obstet Gynecol & Reprod Biol, Boston, MA 02115 USA
[4] Shanghai Med Univ, Dept Pathol, Shanghai 200032, Peoples R China
[5] Shanghai Tumor Hosp, Dept Anat Pathol, Shanghai 200032, Peoples R China
[6] Chinese Acad Med Sci, Tumor Hosp, Dept Pathol, Beijing 100037, Peoples R China
[7] Sun Yat Sen Univ Med Sci, Dept Pathol, Guangzhou, Peoples R China
[8] Chinese Univ Hong Kong, Prince Wales Hosp, Dept Microbiol, Shatin, Hong Kong, Peoples R China
[9] German Canc Res Ctr, D-6900 Heidelberg, Germany
[10] Chinese Univ Hong Kong, Prince Wales Hosp, Ctr Clin Trials & Epidemiol Res, Shatin, Hong Kong, Peoples R China