1. Neurologic disorders of vitamin B12 deficiency;Roach;Am Fam Physician,1982
2. Diagnosing vitamin B12 deficiency, a common geriatric disorder;Carethers;Geriatrics,1988
3. Neuropsychiatric disorders caused by cobalamin deficiency in the absence of anemia or macrocytosis;Lindenbaum;N Engl J Med,1988
4. Vitamin B12 and geriatrics: unanswered questions;Thompson;Acta Haematol,1989
5. The spectrum of vitamin B12 deficiency;Clementz;Am Fam Physician,1990