RT Journal Article SR Electronic T1 Should percutaneous devices be used to close a patent foramen ovale after cerebral infarction or TIA? JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 537 OP 538 DO 10.1136/hrt.82.5.537 VO 82 IS 5 A1 J CHAMBERS YR 1999 UL http://heart.bmj.com/content/82/5/537.abstract AB