title: A study of aortic regurgitation in aortic-valve homografts.
mesh_terms: D001021:Aortic Valve / Q000637:transplantation*; D001022:Aortic Valve Insufficiency / Q000209:etiology*; D001027:Aortography; D006328:Cardiac Catheterization; D002932:Cineangiography; D004562:Electrocardiography; D006801:Humans; D007201:Indicator Dilution Techniques; D013902:Radiography, Thoracic; D014184:Transplantation, Homologous