RT Journal Article SR Electronic T1 Pericardial constriction: uncommon patterns JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 257 OP 258 DO 10.1136/hrt.2003.024828 VO 90 IS 3 A1 Sagristà-Sauleda, J YR 2004 UL http://heart.bmj.com/content/90/3/257.abstract AB