Papochiev, K.; Trifonov, P.; Todovichin, D.; Ivanova, I.; Milanova- Krasteva, P.; Krastev, Z. Comparative Analysis of Copper and Zinc Levels in Hepatitis C, Oncology and Healthy Group. AMB 2026, 53 (2), 16-21. https://doi.org/10.2478/AMB-2026-0054.