RT Journal Article SR Electronic T1 Atrial fibrillation, a difficulty in the heart failure screening with natriuretic peptides JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 1236 OP 1237 DO 10.1136/heartjnl-2017-312910 VO 104 IS 15 A1 Paulo Bettencourt A1 Patrícia Lourenço YR 2018 UL http://heart.bmj.com/content/104/15/1236.2.abstract AB