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机构:
Tongji Univ, Sch Med, Shanghai Matern & Infant Hosp 1, Fetal Med Unit,Dept Obstet, Shanghai, Peoples R China
Tongji Univ, Sch Med, Shanghai Matern & Infant Hosp 1, Prenatal Diag Ctr,Dept Obstet, Shanghai, Peoples R China
Fudan Univ, Sch Publ Hlth, Shanghai, Peoples R China
WHO Collaborating Ctr Human Reprod, Shanghai Inst Planned Parenthood Res, Shanghai, Peoples R China Tongji Univ, Sch Med, Shanghai Matern & Infant Hosp 1, Fetal Med Unit,Dept Obstet, Shanghai, Peoples R China