title: Hemoglobin, hematocrit, leukocyte count, and blood grouping in older people.
mesh_terms: D000017:ABO Blood-Group System; D000367:Age Factors; D000368:Aged; D001789:Blood Group Antigens; D005260:Female; D006400:Hematocrit; D006454:Hemoglobins / Q000032:analysis*; D006801:Humans; D007958:Leukocyte Count; D008297:Male; D008875:Middle Aged; D012204:Rh-Hr Blood-Group System; D012494:Sampling Studies; D012606:Scotland
chemical_list: D000017:ABO Blood-Group System; D001789:Blood Group Antigens; D006454:Hemoglobins; D012204:Rh-Hr Blood-Group System