1. Reich, CJ. Vitamin E, selenium, and knee problems. Lancet 1976;i:257 [letter].
2. Wright JW. Personal correspondence, April 1997.
3. Reich, CJ. Vitamin E, selenium, and knee problems. Lancet 1976;i:257 [letter].
4. Wright JW. Personal correspondence, April 1997.
5. Aston B. Manganese and man. J Orthomolec Psychiatry 1980;9:237-49.