11,Strecker EP,Boos I,Husfeldt KJ.Malignant Duodenal Stenosis:palliation with peroral stent.Radiology,1995,196:349-351.
22,Binkert CA,Jost R,Steiner A,et al.Benign and malignant stenoses of the stomach and duodenum:treatment with self-expanding metallic endoprostheses.Rodilogy,1996,199:335-338.