[1] Harvard Univ, Massachusetts Gen Hosp, Sch Med, Div Nephrol,Dept Med, Boston, MA USA
[2] Univ Cologne, Div Renal, Cologne, Germany
[3] Univ Cologne, Dept Med, Cologne, Germany
[4] Univ Cologne, Ctr Mol Med, Cologne, Germany
[5] Univ Cologne, Dept Obstet & Gynecol, Cologne, Germany
[6] Univ Cologne, Dept Neonatol, Cologne, Germany
[7] Univ Cologne, Dept Internal Med, Cologne, Germany
[8] Univ Cologne, Clin Trials Ctr, ZKS Koln, Cologne, Germany
[9] Univ Hosp Leipzig, Dept Obstet, Leipzig, Germany
[10] Univ Hosp Leipzig, Div Nephrol, Dept Internal Med Neurol & Dermatol, Leipzig, Germany
[11] Harvard Univ, Beth Israel Deaconess Med Ctr, Sch Med, Dept Med, Boston, MA 02215 USA
[12] Howard Hughes Med Inst, Chevy Chase, MD USA