title: Serum vitamin B 12 levels in Indian psychiatric patients.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D004032:Diet; D014676:Diet, Vegetarian; D005260:Female; D006400:Hematocrit; D006801:Humans; D007194:India; D008297:Male; D001523:Mental Disorders / Q000097:blood* / Q000150:complications; D008875:Middle Aged; D014805:Vitamin B 12 / Q000097:blood*; D014806:Vitamin B 12 Deficiency / Q000150:complications
chemical_list: D014805:Vitamin B 12