THE DEMOGRAPHY OF ANCA ASSOCIATED VASCULITIS: 735 PATIENTS RECRUITED AT DIAGNOSIS TO SIX EUROPEAN VASCULITIS STUDY GROUP TRIALS - Yew, S; Jayne, D; Westman, K; Hoglund, P; Flossman, O; Mahr, A; Luqmani, R; Robson, J (NEPHROLOGY DIALYSIS TRANSPLANTATION, 2012)