[1] Cent South Univ, Hunan Canc Hosp, Changsha 410013, Peoples R China
[2] Cent South Univ, Affiliated Canc Hosp, Xiangya Med Sch, Changsha 410013, Peoples R China
[3] Canc Hosp, Dept Breast Canc Med Oncol, Changsha 410013, Hunan, Peoples R China
[4] Cent South Univ, Xiangya Med Sch, Affiliated Canc Hosp, Dept Breast Canc Med Oncol, Changsha 410013, Peoples R China
[5] Emory Univ, Rollins Sch Publ Hlth, Dept Biostat & Bioinformat, Atlanta, GA 30322 USA
[6] Geneplus Beijing Inst, Beijing 102206, Peoples R China