[Low level of vitamin B12 in the serum without anemia].
HOLTEN
K
K
SCHRUMPF
A
A
D000740:Anemia; D006801:Humans; D014805:Vitamin B 12; D014806:Vitamin B 12 Deficiency; D014803:Vitamin B Complex
D014803:Vitamin B Complex; D014805:Vitamin B 12
VITAMIN B 12 DEFICIENCY