Department of Internal Medicine, Saarland University Hospital, Homburg, Saar, Germany. florian.egger@uni-saarland.de.Institute of Sports and Preventive Medicine, Saarland University, Campus, Building B8 2, 66123, Saarbrücken, Germany. florian.egger@uni-saarland.de.Department of Internal Medicine, Saarland University Hospital, Homburg, Saar, Germany.Department of Internal Medicine, Saarland University Hospital, Homburg, Saar, Germany.Institute of Sports and Preventive Medicine, Saarland University, Campus, Building B8 2, 66123, Saarbrücken, Germany.Department of Internal Medicine, Saarland University Hospital, Homburg, Saar, Germany.Department of Internal Medicine, Saarland University Hospital, Homburg, Saar, Germany.Department of Internal Medicine, Saarland University Hospital, Homburg, Saar, Germany.Department of Internal Medicine, Saarland University Hospital, Homburg, Saar, Germany.Institute of Sports and Preventive Medicine, Saarland University, Campus, Building B8 2, 66123, Saarbrücken, Germany.Department of Internal Medicine, Saarland University Hospital, Homburg, Saar, Germany.