RT Journal Article SR Electronic T1 NICE chest pain guidance JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 1859 OP 1860 DO 10.1136/hrt.2010.207712 VO 96 IS 22 A1 Mamas A Mamas A1 Douglas Fraser YR 2010 UL http://heart.bmj.com/content/96/22/1859.3.abstract AB