8TM Ng. Pepticulcer disease in the elederly in Singapore [J].Journal of Stroenterology and Hepatology, 1994,9:278～280
9Freston Ms , Freston Jow. Petic ulcer in the elderly unique feactures and mangement[J].Gerialtricas, 1990,45( 1 ):39～45
10Spechler JS.Peptic ulcer disease and its complications.In:Feldman M,editor.Sleisenger and Fordran's Gastrointestinal and Liver Disease[J].Elsevier,Philadelphia,PA ;2002,747 ～ 781.
