[Vitamin B12 deficiency: neurologic and psychiatric diseases].
D006801:Humans; D001523:Mental Disorders / Q000209:etiology*; D009422:Nervous System Diseases / Q000209:etiology*; D014806:Vitamin B 12 Deficiency / Q000150:complications*
Vitamin-B12-Mangel: neurologische und psychiatrische Erkrankungen.