1. Departments of Cardiology and Nephrology, University of Oslo, Ullevaal Hospital, Oslo, Norway
2. Department of Hypertension and Diabetology, Medical University of Gdansk, Gdańsk, 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, Birmingham, AL, USA