[1] Fudan Univ, Shanghai Ji Ai Genet & IVF Inst, Shanghai Key Lab Female Reprod Endocrine Related D, Obstet & Gynecol Hosp, 19 Fangxie Rd, Shanghai 200011, Peoples R China
[2] Fudan Univ, Sch Life Sci, State Key Lab Genet Engn, Shanghai, Peoples R China
[3] Chongqing Populat & Family Planning Sci & Technol, NHC Key Lab Birth Defects & Reprod Hlth, Chongqing Key Lab Birth Defects & Reprod Hlth, Chongqing, Peoples R China
[4] Fudan Univ, Shanghai Med Sch, Dept Obstet & Gynecol, Shanghai, Peoples R China