RT Journal Article SR Electronic T1 We have a greater understanding of ‘cardiac syndrome X,’ but questions remain JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 532 OP 533 DO 10.3949/ccjm.88b.10021 VO 88 IS 10 A1 Brian F. Mandell YR 2021 UL http://www.ccjm.org/content/88/10/532.abstract AB