title: Distribution of ABO and Rh(D) blood groups in pregnant women in the Hackney district from 1977 to 1983.
mesh_terms: D000017:ABO Blood-Group System / Q000235:genetics*; D044466:Asian People / Q000235:genetics; D044383:Black People / Q000235:genetics; D005260:Female; D006801:Humans; D008131:London; D011247:Pregnancy / Q000097:blood*; D012189:Retrospective Studies; D012204:Rh-Hr Blood-Group System / Q000235:genetics*; D044465:White People / Q000235:genetics
chemical_list: D000017:ABO Blood-Group System; D012204:Rh-Hr Blood-Group System