RT Journal Article SR Electronic T1 Heartbeat: phenotypic heterogeneity of bicuspid aortic valve disease JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 541 OP 543 DO 10.1136/heartjnl-2018-313186 VO 104 IS 7 A1 Catherine M Otto YR 2018 UL http://heart.bmj.com/content/104/7/541.abstract AB