RT Journal Article SR Electronic T1 Cardiopulmonary exercise testing and sports participation in adults with congenital heart disease JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 1670 OP 1679 DO 10.1136/heartjnl-2018-313928 VO 105 IS 21 A1 Jonathan Buber A1 Keri Shafer YR 2019 UL http://heart.bmj.com/content/105/21/1670.abstract AB