Original Article
The Association of Serum Zinc, Copper and Selenium Levels on Mortality, Need for Mechanical Ventilation and Duration of ICU Stay in Critically Ill Patients with COVID-19: A Cross-Sectional Study
Shahnaz Fooladi-Sarabi 1 
, Hassan Ghobadi 2 , Effat Iranijam 3 , Jafar Mohammadshahi 4 , Milad Bagheri 5 , Somaieh Matin 6 * , Ata Mahmoodpoor 7 * , Amir Vahedian-Azimi 8 * , Abbas Samim 9 , Sina Naghilou 10