RT Journal Article SR Electronic T1 Cystic tumour of the atrioventricular node JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 122 OP 122 DO 10.1136/heart.89.2.122 VO 89 IS 2 A1 Y Nojima A1 H Ishibashi-Ueda A1 M Yamagishi YR 2003 UL http://heart.bmj.com/content/89/2/122.abstract AB