High efficacy of combination lamivudine and hepatitis B immunoglobulin in the prophylaxis of hepatitis B recurrence after liver transplantation: Pietro Ciccorossi, Gastroenterology & Hepatology, Pisa Italy; Franco Filipponi, General Surgery and Transplants Unit, Pisa Italy; Filippo Oliveri Sr., Barbara Coco, Piero Colombatto, Ferruccio Bonino, Gastroenterology & Hepatology, Pisa Italy; Mario Campa, Dep of Experimental Pathology, Medical Biotechnologies, Infectivology and Epidemiology, Pisa Italy; Franco Mosca, General Surgery and Transplants Unit, Pisa Italy; Maurizia R Brunetto, Gastroenterology & Hepatology, Azienda Ospedaliera Universitaria Pisana, Pisa Italy