Vitamin B-12 and folate deficiency in elderly persons.
Wald
Nicholas J
NJ
Law
Malcolm
M
Hoffbrand
Victor A
VA
D000368:Aged; D005494:Folic Acid Deficiency / Q000097:blood*; D006801:Humans; D008297:Male; D006113:United Kingdom / Q000453:epidemiology; D014806:Vitamin B 12 Deficiency / Q000097:blood* / Q000175:diagnosis / Q000453:epidemiology