A 10-day levofloxacin-based triple therapy in patients who have failed two eradication courses. - GATTA, L.; ZULLO, A.; PERNA, F.; RICCI, C.; DE FRANCESCO, V.; TAMPIERI, A.; BERNABUCCI, V.; CAVINA, M.; HASSAN, C.; IERARDI, E.; MORINI, S.; VAIRA, D. (Alimentary Pharmacology & Therapeutics, 2005)