RT Journal Article SR Electronic T1 Disc and strut embolisation after minor strut fracture in a Björk-Shiley mitral valve prosthesis. JF Thorax JO Thorax FD BMJ Publishing Group Ltd and British Thoracic Society SP 158 OP 159 DO 10.1136/thx.40.2.158 VO 40 IS 2 A1 Y Khalil A1 B Sethia A1 R O Quin A1 W H Bain YR 1985 UL http://thorax.bmj.com/content/40/2/158.abstract AB