RT Journal Article SR Electronic T1 You can observe a lot by watching JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 440 OP 442 DO 10.3949/ccjm.86a.19056 VO 86 IS 7 A1 Salvatore Mangione YR 2019 UL http://www.ccjm.org/content/86/7/440.abstract AB