1. Wallace DJ, Hahn BH (1997) Dubois lupus erythematosus, 5th edn. Lea and Febiger, Philadelphia
2. Vural H, Uzun K, Uz U, Kocyigit A, Cigli A, Akyol Ö (2000) Concentrations of copper, zinc and various elements in serum of patients with bronchial asthma. J Trace Elem Med Biol 14:88–91
3. Durak I, Kavutcu M, Canpolat O, Işik AU, Akyol O (1994) Concentrations of some major and minor elements in larynx tissues with and without cancer. Bio Metal 7:45–48
4. Taysi S, Gulcin I, Sari RA, Kuskay S, Bakan N (2003) Trace elements and disease activity score in patients with rheumatoid arthritis. Pain Clin 15:435–439
5. Magalova T, Bella V, Brtkova A, Beno I, Kudlackova M, Volkovova K (1999) Copper, zinc and superoxide dismutase in precancerous, benign diseases and gastric, colorectal and breast cancer. Neoplasma 46:100–104