title: Rates of change of world ABO blood-group frequencies.
mesh_terms: D000017:ABO Blood-Group System; D000349:Africa; D001208:Asia; D001789:Blood Group Antigens; D005060:Europe; D005787:Gene Frequency; D005828:Genetics, Population; D006801:Humans; D009656:North America; D012426:Russia; D012800:Siberia; D013020:South America
chemical_list: D000017:ABO Blood-Group System; D001789:Blood Group Antigens