1. Response to letters;Benton;Lancet,1988
2. Vitamin/mineral supplementation and intelligence;Benton;Lancet,1990
3. Vitamin and mineral intake and psychological functioning;Benton,1991
4. Vitamin/mineral supplementation and intelligence;Benton;Lancet,1990
5. Selenium supplementation improves mood in a double-blind crossover trial;Benton;Psychopharmacology,1990