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 SP 329 OP 333 DO 10.3949/ccjm.87a.20054 VO 87 IS 6 A1 Kamran Kadkhoda YR 2020 UL http://www.ccjm.org/content/87/6/329.abstract AB