[1] Univ Virginia, Dept Pathol, Beirne B Carter Ctr Immunol, Charlottesville, VA 22903 USA
[2] Peking Union Med Coll, Sch Basic Med, Beijing, Peoples R China
[3] Univ Hong Kong, Shenzhen Hosp, Ctr Assisted Reprod & Embryol, Shenzhen Key Lab Fertil Regulat, Shenzhen, Peoples R China