RT Journal Article SR Electronic T1 Magnetic resonance imaging of unroofed coronary sinus JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 720 OP 720 DO 10.1136/hrt.2008.159160 VO 95 IS 9 A1 S C S Low A1 G R Oliveira A1 J H Maki YR 2009 UL http://heart.bmj.com/content/95/9/720.abstract AB