Methotrexate versus cyclophosphamide for remission maintenance in ANCA-associated vasculitis: A randomised trial. oleh Federica Maritati, Federico Alberici, Elena Oliva, Maria L Urban, Alessandra Palmisano, Francesca Santarsia, Simeone Andrulli, Laura Pavone, Alberto Pesci, Chiara Grasselli, Rosaria Santi, Bruno Tumiati, Lucio Manenti, Carlo Buzio, Augusto Vaglio