Type of congenital heart defect.

<p>TGA = transposition of the great arteries; CCTGA = congenital corrected transposition of the great arteries; miscellaneous: Ebstein's anomaly, subaortic stenosis, pulmonary atresia.</p

Clinical characteristics of study population.

<p>Data are expressed as mean±SD or as counts (percentage).</p

ADMA and NT-proBNP in patients with limitations of their cardiopulmonary exercise capacity.

<p>ADMA and NT-proBNP in patients with limitations of their cardiopulmonary exercise capacity.</p

Receiver-operating characteristic (ROC) curves for identifying patients with severely limited cardiopulmonary exercise capacity.

<p>Receiver-operating characteristic (ROC) curves for identifying patients with severely limited cardiopulmonary exercise capacity.</p