title: Serum vitamin B12 status in chronic schizophrenic patients.
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012559:Schizophrenia / Q000097:blood*; D014805:Vitamin B 12 / Q000097:blood*
chemical_list: D014805:Vitamin B 12