RT Journal Article SR Electronic T1 A useful gap JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 587 OP 588 DO 10.3949/ccjm.90b.10023 VO 90 IS 10 A1 Mandell, Brian F. YR 2023 UL http://www.ccjm.org/content/90/10/587.abstract AB