1. Herbert V. Vitamin B12—an overview. In: Herbert V, ed. Vitamin B12deficiency. London: Royal Society of Medicine Press, 1999:1–81
2. The Danger of B12 Deficiency in the Elderly
3. Dharmarajan TS, Norkus EP. Vitamin B,12deficiency in the elderly—population- based research. In: Herbert V, ed, 1 pp 27–34
4. Cobalamin, the stomach, and aging
5. Vitamin B-12 deficiency in the elderly: current dilemmas