[1] Univ Gothenburg, Dept Med, Sahlgrenska Acad, Gothenburg, Sweden
[2] Med Univ Gdansk, Dept Hypertens & Diabetol, Gdansk, Poland
[3] Univ Oslo, Ullevaal Hosp, Dept Cardiol, N-0407 Oslo, Norway
[4] Univ Alabama Birmingham, Vasc Biol & Hypertens Program, Birmingham, AL USA