1 Division of Performance and Health (Sport Medicine), Department of Sports and Sports Science, TU Dortmund University, Dortmund, Germany.
2 Department of Molecular and Cellular Sport Medicine, Institute of Cardiovascular Research and Sports Medicine, German Sport University Cologne, Cologne, Germany.
3 Department III of Internal Medicine, Hematology and Oncology, Kepler University of Linz, Linz, Österreich, Austria.
4 Department I of Internal Medicine, Center of Integrated Oncology Aachen Bonn Cologne Duesseldorf, University of Cologne, Cologne, Germany.