An echocardiographic study of right and left ventricular adaptation to physical exercise in elite female orienteers. - Henriksen,E.; Landelius,J.; Kangro,T.; Jonason,T.; Hedberg,P.; Wesslen,L.; Rosander,CN.; Rolf,C.; Ringqvist,I.; Friman,G. (Eur Heart J, 1999)