RT Journal Article SR Electronic T1 The Roentgenologic Appearance of Pericardial Calcification JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 72 OP 77 VO 18 IS 2 A1 Wylie H. Mullen, Jr. A1 Robert M. Geist, Jr. YR 1951 UL http://www.ccjm.org/content/18/2/72.abstract AB