EULAR recommendations for conducting clinical studies and/or clinical trials in systemic vasculitis: Focus on anti-neutrophil cytoplasm antibody-associated vasculitis

Bernhard Hellmich, Oliver Flossmann, Wolfgang L. Gross, Paul Bacon, Jan Willem Cohen-Tervaert, Loic Guillevin, D. Jayne, Alfred Mahr, Peter A. Merkel, Heiner Raspe, David G.I. Scott, James Witter, Hasan Yazici, Raashid A. Luqmani^*