Clinical outcomes of secondary prevention strategies for young patients with cryptogenic stroke and patent foramen ovale by Danese, A, Stegagno, C, Tomelleri, G, Piccoli, A, Turri, G, Carletti, M, Variola, A, Anselmi, M, Mazzucco, S, Ferrara, A, Bovi, P, Micheletti, N, Cappellari, M, Monaco, S, Vassanelli, C, Ribichini, F