RT Journal Article SR Electronic T1 Stamps in cardiology: foxglove JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 103 OP 103 DO 10.1136/hrt.81.1.103 VO 81 IS 1 A1 TSUNG O CHENG YR 1999 UL http://heart.bmj.com/content/81/1/103.1.abstract AB