RT Journal Article SR Electronic T1 Review: ECG, BNP, and N terminal-pro BNP are more sensitive than specific for chronic left ventricular systolic dysfunction JF Evidence Based Medicine JO Evid Based Med FD BMJ Publishing Group Ltd SP 117 OP 117 DO 10.1136/ebm.11.4.117 VO 11 IS 4 YR 2006 UL http://ebm.bmj.com/content/11/4/117.abstract AB