RT Journal Article SR Electronic T1 2020: A year like no other JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 710 OP 711 DO 10.3949/ccjm.87b.12020 VO 87 IS 12 A1 Mandell, Brian F. YR 2020 UL http://www.ccjm.org/content/87/12/710.abstract AB