Adult primary angiitis of the central nervous system: isolated small-vessel vasculitis represents distinct disease pattern. - de Boysson, Hubert; Boulouis, Grégoire; Aouba, Achille; Bienvenu, Boris; Guillevin, Loïc; Zuber, Mathieu; Touzé, Emmanuel; Naggara, Olivier; Pagnoux, Christian (Rheumatology, 2017)