Andersson , L.-G., E. Henriksen, S. Damm, T. Jonason, U. Niklasson, L. Wesslén, C. Nyström-Rosander, E. Maripuu, I. Ringqvist, C. Rolf, G. Hedenstierna, and G. Friman. “Thallium-201 Myocardial Imaging at Rest in Male Orienteers and Other Endurance Athletes”. Upsala Journal of Medical Sciences, vol. 106, no. 1, July 2009, pp. 59–66, doi:10.3109/2000-1967-173.