Treatment of Polyarteritis Nodosa and Microscopic Polyangiitis Without Poor-Prognosis Factors: A Prospective Randomized Study of One Hundred Twenty-Four Patients. - Ribi, Camillo; Cohen, Pascal; Pagnoux, Christian; Mahr, Alfred; Arène, Jean-Pierre; Puéchal, Xavier; Carli, Philippe; Kyndt, Xavier; Le Hello, Claire; Letellier, Philippe; Cordier, Jean-François; Guillevin, Loïc (Arthritis & Rheumatism, 2010)