Duration of Elevated Heart Rate Is an Important Predictor of Exercise‐Induced Troponin Elevation oleh Magnus Bjørkavoll‐Bergseth, Øyunn Kleiven, Bjørn Auestad, Trygve Eftestøl, Kay Oskal, Martin Nygård, Øyvind Skadberg, Kristin Moberg Aakre, Tor Melberg, Knut Gjesdal, Stein Ørn