title: A mother-child combination analysis for ABO-Hp interaction.
mesh_terms: D000017:ABO Blood-Group System; D004592:Electrophoresis, Starch Gel; D005260:Female; D005787:Gene Frequency; D005860:Germany, West; D006242:Haptoglobins; D006801:Humans; D010641:Phenotype
chemical_list: D000017:ABO Blood-Group System; D006242:Haptoglobins