RT Journal Article SR Electronic T1 COVID-19 serologic testing: FAQs and caveats JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic DO 10.3949/ccjm.87a.20054 A1 Kamran Kadkhoda YR 2020 UL http://www.ccjm.org/content/early/2020/05/13/ccjm.87a.20054.abstract AB