Journal Nutrition. Volume 91-92:111467, 2021 Nov-Dec. Author Arrieta F; Martinez-Vaello V; Bengoa N; et.al. We studied serum zinc and copper concentrations in people with severe COVID-19 and zinc supplementation in parenteral nutrition. Link https://www.sciencedirect.com/science/article/pii/S0899900721003294 Tags COVID-19 Copper critical care parenteral nutrition Zinc