Reproducibility and clinical significance of exercise-induced increases in cardiac troponins and N-terminal pro brain natriuretic peptide in endurance athletes. - Scharhag,J.; Urhausen,A.; Schneider,G.; Herrmann,M.; Schumacher,K.; Haschke,M.; Krieg,A.; Meyer,T.; Hermann,W.; Kindermann,W. (Eur J Cardiovasc Prev Rehabil, 2006)