Department;
of;
Internal;
Medicine;
Zhongshan;
Municipal;
Bo’ai;
Hospital;
Zhongshan;
528403;
China;
Intensive;
Care;
Unit;
Zhongshan;
Municipal;
Bo’ai;
Hospital;
Department;
of;
Sugery;
Zhongshan;
Municipal;
Bo’ai;
Hospital;
China;
endoscopy; admission; ulceration; manifest; mucosal; seriously; illness; bleeding; pathogenesis; porting;