SecondDepartmentofIntemalMedicine;
NagasakiUniversitySchoolofMedicine;
1-7-1Sakamoto;
Nagasaki;
Japan;
DepartmentofSurgery;
ZeshinkaiHospital;
7-9Furukawa;
Nagasaki;
Japan;
DepartmentofDigestiveDisease;
NanjingDrumTowerHospital;
MedicalSchoolofNanjingUniversity;
Nanjing210008;
JiangsuProvince;
China;
DepartmentofPathology;
InstituteofTropicalMedicine;
NagasakiUniversitySchoolofMedicine;
12-4Sakamoto;
Nagasaki;
Japan;