RT Journal Article SR Electronic T1 Ventricular pre-excitation producing resolution of complete atrioventricular block JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 102 OP 102 DO 10.1136/heart.83.1.102 VO 83 IS 1 A1 C Wren YR 2000 UL http://heart.bmj.com/content/83/1/102.abstract AB