1. Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden (M.B., B.C.).
2. Department of Cardiology, Helena Venizelou Hospital, Athens, Greece (C.T.).
3. Charité – Universitätsmedizin Berlin, Institute of Clinical Pharmacology and Toxicology, Charitéplatz 1, Berlin, Germany (R.K.).
4. University of Milano-Bicocca, Milan, Italy (G.M.).