Magnitude, reproducibility, and association with baseline cardiac function of cardiac biomarker release in long-distance runners aged ≥ 55 years. - Sahlén,A.; Winter,R.; Lind,B.; Jacobsen,PH.; Ståhlberg,M.; Marklund,T.; Fux,T.; Svensson,J.; Braunschweig,F. (Am J Cardiol, 2008)