[1
]
Department of Gastroenterology and Hepatology, Kindai University Faculty of Medicine,
Osaka-sayama, Japan.
[2
]
Department of Pathology, Kindai University Faculty of Medicine, Osaka-sayama, Japan.
[3
]
Clinical Research Center, Kindai University Hospital, Osaka-sayama, Japan.
[4
]
Department of Surgery, Kindai University Faculty of Medicine, Osaka-sayama, Japan.
[5
]
Gastroenterology Unit, Hospital of Imola, University of Bologna, Bologna, Italy.