RT Journal Article SR Electronic T1 Acute pericardial disease: approach to the aetiologic diagnosis JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 252 OP 254 DO 10.1136/hrt.2003.024802 VO 90 IS 3 A1 G Permanyer-Miralda YR 2004 UL http://heart.bmj.com/content/90/3/252.abstract AB