Maintenance therapy is associated with better long-term outcomes in adult patients with primary angiitis of the central nervous system. - de Boysson, Hubert; Parienti, Jean-Jacques; Arquizan, Caroline; Boulouis, Grégoire; Gaillard, Nicolas; Régent, Alexis; Néel, Antoine; Detante, Olivier; Touzé, Emanuel; Aouba, Achille; Bienvenu, Boris; Guillevin, Loïc; et al. (Rheumatology, 2017)