Importance of pre-operative COVID-19 screening test in elective surgeries - Nazemi, Pershang; Feizabad, Elham; Shokouhi, Nasim; Hashemi, Melika; Saeedi, Sara; Shirali, Elham; Mabadi, Avin; Azarnoush, Ayein (Iranian Journal of Microbiology, 2022)