[1] UCL, London, England
[2] Hop Manhes, Paris, France
[3] Hlth Sci Ctr St Johns, St John, NF, Canada
[4] Denver Nephrol, Denver, CO USA
[5] Inst Nacl Ciencias Med & Nutr Salvador Zubiran, Mexico City, DF, Mexico
[6] Amgen Inc, Thousand Oaks, CA 91320 USA
[7] Univ Picardie, INSERM, U1088, UFR Med Pharm, Amiens, France
[8] Univ Klinikum RWTH Aachen, Aachen, Germany
[9] Stanford Univ, Sch Med, Palo Alto, CA 94304 USA
[10] Indiana Univ Sch Med, Roudebush Vet Adm Med Ctr, Indianapolis, IN 46202 USA
[11] Univ Minnesota, Hennepin Cty Med Ctr, Minneapolis, MN 55415 USA