[1] Ningxia Med Univ, Key Lab Fertil Preservat & Maintenance, Key Lab Reprod & Genet Ningxia, Minist Educ, Ningxia 75004, Yinchuan, Peoples R China
[2] Chinese Univ Hong Kong, Shandong Univ, Sch Biomed Sci, Fac Med,Joint Lab Reprod Genet, Hong Kong, Peoples R China
[3] Capital Normal Univ, Coll Life Sci, Beijing 100048, Peoples R China
[4] Shanghai Jiao Tong Univ, Key Lab Genet Dev & Neuropsychiat Disorders, Renji Hosp, Minist Educ,Bio X Inst,Sch Med, Shanghai 200240, Peoples R China