RT Journal Article SR Electronic T1 Progressive myxomatous degeneration of the cardiac valves JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 23 OP 27 VO 46 IS 1 A1 Uy, Santos A. A1 Taylor, Paul C. A1 Kramer, John R. YR 1979 UL http://www.ccjm.org/content/46/1/23.abstract AB