Correlation between maternal and fetal ABO blood groups, toxemias of pregnancy, and the sex ratio.
D000017:ABO Blood-Group System; D001787:Blood Group Incompatibility / Q000235:genetics*; D004899:Erythroblastosis, Fetal / Q000235:genetics; D005260:Female; D006801:Humans; D006973:Hypertension / Q000235:genetics; D008431:Maternal-Fetal Exchange; D011110:Polymorphism, Genetic; D011225:Pre-Eclampsia / Q000235:genetics*; D011247:Pregnancy; D011249:Pregnancy Complications, Cardiovascular / Q000235:genetics; D011250:Pregnancy Complications, Hematologic / Q000235:genetics; D012744:Sex Ratio
D000017:ABO Blood-Group System