RT Journal Article SR Electronic T1 Mechanical aortic valve thrombosis with severe valvular dysfunction treated with multiple rounds of thrombolysis JF BMJ Case Reports JO BMJ Case Reports FD BMJ Publishing Group Ltd SP e234746 DO 10.1136/bcr-2020-234746 VO 13 IS 3 A1 Muhammad Asim Shabbir A1 Muhammad Hamza Saad Shaukat A1 Evan Joye A1 Scott Purga YR 2020 UL http://casereports.bmj.com/content/13/3/e234746.abstract AB