[1] Hannover Med Sch, Dept Nephrol, Hannover, Germany
[2] Univ Innsbruck, Inst Med Biol & Hum Gen, A-6020 Innsbruck, Austria
[3] Univ Magdeburg, Univ Hosp, Inst Clin Pharmacol, D-39106 Magdeburg, Germany
[4] Heidelberg Univ, Dept Internal Med, Heidelberg, Germany