DepartmentofDigestiveDiseases;
AffiliatedFirstPeople'sMunicipalHospital;
GuangzhouMedicalCollege;
Guangzhou510180;
GuangdongProvince;
China;
DepartmentofDigestiveDiseases;
AffiliatedFirstPeople'sMunicipalHospital;
GuangzhouMedicalCollege;
Guangzhou510180;
GuangdongProvince;
China;