Comprehensive use of cardiopulmonary exercise testing identifies adults with congenital heart disease at increased mortality risk in the medium term. - Inuzuka R; Diller GP; Borgia F; Benson L; Tay EL; Alonso-Gonzalez R; Silva M; Charalambides M; Swan L; Dimopoulos K; Gatzoulis MA (Circulation, 2012)