1. P. E. Johnson, D. B. Milne, and G. L. Lykken, Effects of age and sex on copper absorption, biological half-life and status in humans,Am. J. Clin. Nutr.,56, 917–925 (1992).
2. R. A. Disilvestro and G. P. Carlson, Effects of moderate copper deficiency on carbon tetrachloride-induced hepatotoxicity in rats,Proc. Soc. Exp. Biol. Med.,197, 32–35 (1991).
3. J. R. Turnlund, Copper, inModern Nutrinon in Health and Disease, vol. 1, 8th ed., M. E. Shils, J. A. Olson and M. Shike, eds., Lea and Febiger, Philadelphia, pp. 231–241 (1994).
4. J. C. King and C. L. Keen, Zinc, inModern Nutrition in Health and Disease, vol. 1, 8th ed., M. E. Shils, J. A. Olson, and M. Shike eds., Lea and Febiger, Philadelphia, pp. 214–230 (1994).
5. G. Jia, Analysis of serum levels of selenium, zinc, and copper in 132 patients with malignant tumors,Chung. Hua. Yu. Fang. I. Hsueh. Tsa. Chich. 25, 205–207 (1991).