RT Journal Article SR Electronic T1 Drug induced QT prolongation and torsades de pointes JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 1363 OP 1372 DO 10.1136/heart.89.11.1363 VO 89 IS 11 A1 Yee Guan Yap A1 A John Camm YR 2003 UL http://heart.bmj.com/content/89/11/1363.abstract AB