Department of Internal Medicine;
Tokyo Metropolitan Komagome Hospital;
Tokyo 113-8677;
Japan;
Department of Surgery;
Tokyo Metropolitan Komagome Hospital;
Tokyo 113-8677;
Japan;
Departments of Pathology;
Tokyo Metropolitan Komagome Hospital;
Tokyo 113-8677;
Japan;
Department of Gastroenterology and Hepatology;
Omori Medical Center;
Toho University School of Medicine;
Tokyo 143-8541;
Japan;