RT Journal Article SR Electronic T1 Brain natriuretic peptide, survival and response to targeting therapy: another piece in the complex puzzle of Eisenmenger syndrome JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 681 OP 682 DO 10.1136/heartjnl-2012-301832 VO 98 IS 9 A1 Michele D'Alto YR 2012 UL http://heart.bmj.com/content/98/9/681.abstract AB