1. University Milano-Bicocca, Milan, Italy (G.M.).
2. Department of Public Health and Clinical Medicine, Umea University, Sweden (Mattias Brunström).
3. Faculty of Biology and Medicine, University of Lausanne, Switzerland (Michel Burnier).
4. Clinica Medica, University Milano-Bicocca, Milan, Italy (G.G.).
5. Department of Hypertension, National Institute of Cardiology, Warsaw, Poland (A.J.).
6. Institute for Clinical Medicine, University of Oslo, Norway (S.E.K.).
7. Departments of Cardiology and Nephrology, Ullevaal Hospital, Oslo, Norway (S.E.K.).
8. UOC 2 Medicina, ASST Spedali Civili di Brescia, Department of Clinical and Experimental Sciences, University of Brescia, Italy (M.L.M.).
9. Department of Cardiology, General Hospital of Athens “Laiko”, Greece (C.T.).
10. First Department of Cardiology, Medical School, University of Athens, Hippokration Hospital, Greece (K.T.).
11. Charite-Universitaetsmedizin Berlin, Institute of Clinical Pharmacology and Toxicology, Germany (R.K.).