RT Journal Article SR Electronic T1 Interventional catheterisation. Opening up II: venous return, the atrial septum, the arterial duct, aortopulmonary shunts, and aortopulmonary collaterals JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 237 OP 240 DO 10.1136/heart.83.2.237 VO 83 IS 2 A1 John L Gibbs YR 2000 UL http://heart.bmj.com/content/83/2/237.abstract AB