title: Increased male-to-female sex ratio among HLA-DR compatible pregnancies.
authors.forename: C
authors.initials: C
authors.lastname: Ober
authors.forename: J L
authors.initials: JL
authors.lastname: Simpson
authors.forename: R
authors.initials: R
authors.lastname: Radvany
mesh_terms: D005260:Female; D005333:Fetus / Q000276:immunology; D006684:HLA-DR Antigens; D006648:Histocompatibility; D000949:Histocompatibility Antigens Class II / Q000032:analysis*; D006801:Humans; D008297:Male; D011247:Pregnancy; D012744:Sex Ratio
chemical_list: D006684:HLA-DR Antigens; D000949:Histocompatibility Antigens Class II