Tongji;
Medical;
College;
Huazhong;
University;
of;
Science;
and;
Technology;
Department;
of;
Infectious;
Diseases;
Huazhong;
University;
of;
Science;
and;
Technology;
Department;
of;
Gastroenterology;
Huazhong;
University;
of;
Science;
and;
Technology;
Central;
Laboratory;
Union;
Hospital;