1. Department of Clinical Science, University of Bergen, Bergen, Norway;
2. Hypertension Research Center, Federico II University Hospital, Napoli, Italy;
3. Department of Translational Medical Sciences, Federico II University Hospital, Naples, Italy;
4. Department of Medicine, Skeleftaa Hospital, University of Umeaa, Skelleftaa, Sweden;
5. Department of Cardiology, Gentofte Hospital, Copenhagen, Denmark;
6. Department of Medicine, Sahlgrenska University Hospital/Östra, Göteborg, Sweden;
7. Division of Cardiology, Weill Medical College of Cornell University, New York, NY, USA