LI Z , ZOU D , MA X , et al . Epidemiology of peptic ulcer disease: endoscopic results of the systematic ivestigation of gastrointestinal disease in China [J]. Am J Gastroenterol , 2010 , 105 ( 12 ): 2570 - 2577 .
TAKEMOTO T , SASAKI N , TADA M , et al . Evaluation of peptic ulcer healing with a highly magnifying endos-cope:potential prognostic and therapeutic implications [J]. J Clin Gastroenterol , 1991 , 13 ( 1 ) : 125 - 128 .
KIMURA K , YOSHIDA Y , KIHIRA K , et al . Endoscopic ultrasonographic(EUS) evaluation of the quality of gastric ulcer healing [J]. Gastroenterol Japonica , 1993 , 28 ( 5 ): 178 - 185 .