PT - JOURNAL ARTICLE AU - Mandell, Brian F. TI - We have a greater understanding of ‘cardiac syndrome X,’ but questions remain AID - 10.3949/ccjm.88b.10021 DP - 2021 Oct 01 TA - Cleveland Clinic Journal of Medicine PG - 532--533 VI - 88 IP - 10 4099 - http://www.ccjm.org/content/88/10/532.short 4100 - http://www.ccjm.org/content/88/10/532.full SO - Cleve Clin J Med2021 Oct 01; 88