6Fisher GL , Shifrine M . Hypothesis is for the mechanism of clevated Seerum copper levels in cancer patients[J]. Oncology, 1978,35:22.
7Inutsuka S , Araki S. Plama copper and zinc levels in patients with malignant tumors of digestive organs[J ]. Cancer, 1987,42: 626.
8Gupea SK, Shukla VK, Vaidya MP, et al . Serum trace elements and CU/ZN ratio in breast cancer patients[J]. J Surg Oncol , 1991,46(3):178- 181.
9Gorodetsky R , Fuks ZV , Sulkes A ,et al . Correlation of erythrocyle and plasma levels of zinc and iron with evidence of metastaic spread in cancer patients[J]. Cancer,1985,55(4):779 187.
10Bernard G. Copper and copper-binding protein in liver tumor [J].Cancer, 1988, 61:1155.
