[1] Tulane Univ, Cardiol Sect, New Orleans, LA 70118 USA
[2] Genzyme Drug Discovery & Dev, Clin Dev, Waltham, MA USA
[3] Pioneer Biodiligence, Amherst, MA USA
[4] Univ Calif San Francisco, Div Nephrol, San Francisco, CA 94143 USA
[5] Univ Klinikum Graz, Med Klin, Klin Abt Nephrol, Graz, Austria
[6] Klinikum Univ Heidelberg, Sekt Nephrol, Heidelberg, Germany