title: Haemoglobin levels in a group of over 75-year-old patients studied in general practice.
mesh_terms: D000367:Age Factors; D000368:Aged; D000740:Anemia / Q000453:epidemiology; D004739:England; D005191:Family Characteristics; D005194:Family Practice; D005260:Female; D006454:Hemoglobins / Q000032:analysis*; D006801:Humans; D008297:Male; D012737:Sex Factors; D012923:Social Class
chemical_list: D006454:Hemoglobins