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 Mullen, Wylie H. A1 Geist, Robert M. YR 1951 UL http://www.ccjm.org/content/18/2/72.abstract AB