[1] Univ Birmingham, Sch Med, MRC, Ctr Immune Regulat, Birmingham B15 2TT, W Midlands, England
[2] Univ Birmingham, Sch Med, Div Med Sci, Birmingham, W Midlands, England
[3] Tufts Univ, Sch Med, Boston, MA 02111 USA
[4] Univ Edinburgh, Royal Infirm, Dept Renal Med, Edinburgh EH3 9YW, Midlothian, Scotland
[5] City Hosp, Nottingham NG5 1PB, England
[6] UCL Royal Free & Univ Coll Med Sch, Ctr Nephrol, London, England
[7] Univ London Imperial Coll Sci Technol & Med, Renal Sect, London, England
[8] St James Univ Hosp, Leeds, W Yorkshire, England
[9] Royal Sussex Cty Hosp, Brighton BN2 5BE, E Sussex, England
[10] S Cleveland Hosp, Middlesbrough, Cleveland, England
[11] John Radcliffe Hosp, Oxford OX3 9DU, England
[12] Univ Bristol, Southmead Hosp, Acad Renal Unit, Bristol, Avon, England
[13] Royal Liverpool Hosp, Liverpool L7 8XP, Merseyside, England
[14] Univ Edinburgh, MRC, Ctr Inflammat Res, Edinburgh, Midlothian, Scotland
[15] Univ London Imperial Coll Sci Technol & Med, Sch Med, London, England
[16] Royal Edinburgh & Associated Hosp, NHS Trust, Edinburgh, Midlothian, Scotland
[17] Heidelberg Univ, Dept Internal Med, D-6900 Heidelberg, Germany