1. Department of Cardiology, University of Oslo, Ullevaal Hospital, Oslo, Norway
2. Department of Hypertension and Diabetology, Medical University of Gdansk, Gdansk, Poland
3. Service of Nephrology and Hypertension, Centre Hospitalier Universitaire Vaudois, Lausanne, Switzerland
4. Vascular Biology and Hypertension Program, Department of Medicine, University of Alabama at Birmingham, AL, USA