[1] Herzzentrum Wuppertal, Med Klin 3, Helios Klinikum, D-42117 Wuppertal, Germany
[2] Univ Witten Herdecke, Inst Herz Kreislaufforsch, Witten, Germany
[3] Mayo Clin, Cardiorenal Res Lab, Rochester, MN USA
[4] Bayer AG, Inst Herz Kreislaufforsch, D-5600 Wuppertal, Germany