RT Journal Article SR Electronic T1 Diagnosis of heart failure in primary care: the syndrome and the spectrum JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 436 OP 436 DO 10.1136/hrt.2010.221069 VO 97 IS 5 A1 Claudia Fotzeu YR 2011 UL http://heart.bmj.com/content/97/5/436.1.abstract AB