1. Department of Clinical Chemistry and Transfusion Medicine, University of Gothenburg, Gothenburg, Sweden;
2. Department of Internal Medicine III – Cardiology and Angiology, Heart Center, Medical University of Innsbruck, Innsbruck, Austria;
3. Division of Emergency Medicine and Department of Cardiology, Charité – Universitätsmedizin Berlin, Berlin, Germany;
4. Department of Medical Sciences, Uppsala University and Uppsala Clinical Research Center, Uppsala, Sweden;
5. Department of Cardiovascular Medicine, Mayo Clinic and Medical School, Rochester, MN, USA